CVE-2022-0778

mediumpriority · attend · 66EPSS 0.732 · 99 %ileexploit · PoCDEEUNLRUUS
grimoire priorityP1 · Urgent
Exploitable?
Public exploit
6 exploits · PoC
Likely / severe?
73.2% (99th) EPSS
CVSS 5 · medium
Is it mine?
1,501 products
Check your exposure
Who says so?
10 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-22

The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Siemens ProductCERT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Phoenix Contact PSIRT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · SICK PSIRT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-835USprimaryCWE-1357USCWE-835USCWE-835USCWE-835USCWE-835USCWE-835USCWE-835USCWE-835US
05

exploits (6)

Public proof-of-concept and weaponised exploit code.

06

affected products (1,501)

Products and version ranges known to be affected.

showing 20 of 1,501
07

advisories (43)

Vendor and ecosystem advisories describing this.

  • NCSC-2024-0239Kwetsbaarheden verholpen in Solarwinds PlatformNL2024-06-07csaf · ncsc_nlNL

    Solarwinds heeft kwetsbaarheden verholpen in Solarwinds Platform.

  • NCSC-2024-0333Kwetsbaarheden verholpen in SAP productenNL2024-08-13csaf · ncsc_nlNL

    SAP heeft kwetsbaarheden verholpen in diverse producten als SAP Business Objects, SAP HANA, Netweaver en Document Builder.

  • NCSC-2026-0112Kwetsbaarheden verholpen in Siemens productenNL2026-04-14csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten zoals Analytics Toolkit, Ruggedcom, Industrial Edge Management Pro, SIDIS en TPM.

  • SCA-2022-0012OpenSSL vulnerability affects multiple SICK SIMs2022-08-08csaf · sick_psirtDE

    In March 2022, the OpenSSL development team disclosed a denial of service in versions "3.0.0," "3.0.1," "1.1.1"-"1.1.1m" and "1.0.2-1.0.2zc" of the OpenSSL library. Exploiting this vulnerability allows remote, unauthenticated attackers to cause an infinite loop. It is possible to trigger the infinite loop by creating a certificate that has invalid explicit curve parameters or when parsing created private keys, as they may contain explicit elliptic curve parameters. It may be possible to put the SIMs in a non-responsive state since 100% of the CPU resource is consumed by the infinite loop calculation. The listed SICK SIM products are currently operated with an OpenSSL version that is vulnerable to CVE-2022-0778. With that it could be possible to exploit the mentioned vulnerability if the SIM devices are connected to a network with untrusted devices. In that case an untrusted client may send a manipulated SSH-certificate to the SIM, which exploits the vulnerability in the OpenSSL library as described above when it comes to the certificate validation by the SIM product. Evaluation is undergoing.

  • SCA-2025-0001Multiple vulnerabilities in SICK MEAC3002025-02-14csaf · sick_psirtDE

    SICK has identified vulnerabilities in MEAC300. These vulnerabilities, related to the OpenSSL library and specific device functionalities, could potentially allow remote, unauthenticated attackers to: 1) Cause a denial of service: Triggering an infinite loop that consumes CPU resources, rendering the device unresponsive (CVE-2022-0778). This impacts MEAC300 DE devices running vulnerable OpenSSL versions when processing manipulated SSH certificates. 2) Compromise the MEAC300: Exploit vulnerabilities accessible via Ethernet to potentially impact the availability, integrity, and confidentiality of the device. SICK recommends ensuring that affected products operate within secure network environments to mitigate these risks.

  • SSA-019200SSA-019200: Multiple Vulnerabilities in SCALANCE W-700 IEEE 802.11n Devices Before V6.6.02026-04-14csaf · siemens_psirtDE

    SCALANCE W-700 IEEE 802.11n family before V6.6.0 are affected by multiple vulnerabilities. Siemens has released a new version for SCALANCE W-700 IEEE 802.11n family and recommends to update to the latest version.

  • SSA-028723SSA-028723: Multiple OpenSSL Vulnerabilities in BFCClient Before V2.172025-08-12csaf · siemens_psirtDE

    Siemens BFCClient contains multiple vulnerabilities in the integrated OpenSSL component that could allow an attacker to read memory contents, to change the application behaviour or to create a denial of service condition. Siemens has released a new version for BFCClient and recommends to update to the latest version.

  • SSA-108696SSA-108696: Multiple Vulnerabilities in SIDIS Prime before V4.0.4002024-02-13csaf · siemens_psirtDE

    SIDIS Prime before V4.0.400 is affected by multiple vulnerabilities in the components OPC UA and OpenSSL, that could allow an unauthenticated attacker with access to the network where SIDIS Prime is installed to reuse OPC UA client credentials, create a denial of service condition of the SIDIS Prime OPC UA client, or create a denial of service condition of the SIDIS Prime TLS service. Siemens has released a new version of SIDIS Prime and recommends to update to the latest version.

  • SSA-398330SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.52023-12-12csaf · siemens_psirtDE

    Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version >= V3.1.0 and < V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). These GNU/Linux vulnerabilities have been externally identified. Siemens has released new versions for the affected products and recommends to update to the latest versions. SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 are no longer maintained and there won't be any update to the CVE list anymore. Please update to the latest version. Note: This SSA advises vulnerabilities for firmware version V3.1 only; for versions < V3.1 refer to Siemens Security Bulletin SSB-439005 (https://cert-portal.siemens.com/productcert/html/ssb-439005.html).

  • SSA-712929SSA-712929: Denial of Service Vulnerability in OpenSSL (CVE-2022-0778) Affecting Industrial Products2022-06-14csaf · siemens_psirtDE

    A vulnerability in the openSSL component (CVE-2022-0778, [0]) could allow an attacker to create a denial of service condition by providing specially crafted elliptic curve certificates to products that use a vulnerable version of openSSL. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available. [0] https://www.openssl.org/news/secadv/20220315.txt

  • VDE-2022-013PHOENIX CONTACT: Multiple products affected by possible infinite loop within OpenSSL library2022-04-12csaf · phoenix_contact_psirtDE

    FL MGUARD and TC MGUARD devices are affected by a possible infinite loop within a OpenSSL library method for parsing elliptic curve parameters. This method is used on parsing cryptographic certificates that contain elliptic curve public keys in compressed form, which may occur on: Parsing client certificates for HTTPS administrative login Parsing client certificates for SSH administrative login Parsing peer certificates for IPsec VPN connections Parsing certificates of external servers, including: OpenVPN server Configuration pull server Update server Attackers could try to exploit the vulnerability from remote. For the mGuard Device Manager only the mdm Installer for Windows is affected. UPDATE A: Added FL MGUARD 1102 and FL MGUARD 1105: On FL MGUARD 1102 and FL MGUARD 1105 with mGuardNT 1.5.2 and older, the device can be affected through an adapted certificate. This can occur on connection with a remote logging server, configured for certificate authentication, or an remote authentication server at certificate based authentication.

  • VDE-2022-046PHOENIX CONTACT: Multiple Linux component vulnerabilities in PLCnext Firmware2022-11-10csaf · phoenix_contact_psirtDE

    UPDATE A: Two devices (ENERGY AXC PU, SMARTRTU AXC SG) added (24.11.2022) Update for PLCnext Firmware containing fixes for recent vulnerability findings in Linux components and security enhancements. PLCnext Control AXC F x152 is certified according to IEC 62443-4-1 and IEC 62443-4-2. This certification requires that all third-party components used in the firmware are regularly checked for known vulnerabilities.

  • WID-SEC-W-2022-0065OpenSSL: Schwachstelle ermöglicht Denial of ServiceDeutsch2022-03-15csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in OpenSSL ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • WID-SEC-W-2022-0169Oracle MySQL: Mehrere SchwachstellenDeutsch2022-04-19csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle MySQL ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.

  • WID-SEC-W-2022-0200Oracle Java SE und OpenJDK: Mehrere SchwachstellenDeutsch2022-04-19csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Java SE und OpenJDK ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.

  • WID-SEC-W-2022-0302Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit AdministratorrechtenDeutsch2022-06-14csaf · cert_bundDE

    Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um beliebigen Programmcode auszuführen, einen Cross-Site-Scripting-Angriff durchzuführen, Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen oder Dateien zu manipulieren.

  • WID-SEC-W-2022-0432Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2022-06-21csaf · cert_bundDE

    Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität zu gefährden.

  • WID-SEC-W-2022-0515IBM Spectrum Protect: Mehrere SchwachstellenDeutsch2022-06-29csaf · cert_bundDE

    Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in IBM Spectrum Protect ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, beliebigen Code auszuführen, seine Rechte zu erweitern oder beliebigen Code mit Root-Rechten auszuführen.

  • WID-SEC-W-2022-0551Kyocera Drucker: Mehrere SchwachstellenDeutsch2022-07-03csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Kyocera Druckern ausnutzen, um beliebigen Programmcode auszuführen, einen Cross-Site-Scritping Angriff durchzuführen und einen Denial of Service Zustand herbeizuführen.

  • WID-SEC-W-2022-1057Apple macOS: Mehrere SchwachstellenDeutsch2022-05-16csaf · cert_bundDE

    Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Apple macOS ausnutzen, um seine Privilegien zu erweitern, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen und im schlimmsten Fall das System zu kompromittieren.

  • WID-SEC-W-2022-1335Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2022-09-07csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.

  • WID-SEC-W-2023-1969HPE Fabric OS: Mehrere Schwachstellen ermöglichen PrivilegieneskalationDeutsch2023-08-06csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in HPE Fabric OS für HPE Fibre Channel und SAN Switches ausnutzen, um seine Privilegien zu erhöhen, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.

  • WID-SEC-W-2024-0794Dell ECS: Mehrere SchwachstellenDeutsch2024-04-04csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Dell ECS ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode mit Administratorrechten auszuführen, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuführen.

  • WID-SEC-W-2024-1186IBM DB2 REST: Mehrere SchwachstellenDeutsch2024-05-20csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM DB2 REST ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand zu verursachen.

  • WID-SEC-W-2024-2086SAP Patchday September 2024Deutsch2024-09-09csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in SAP Software ausnutzen, um seine Privilegien zu erhöhen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu erzeugen oder einen Cross-Site-Scripting-Angriff durchzuführen.

  • WID-SEC-W-2026-0180Dell Data Protection Advisor: Mehrere SchwachstellenDeutsch2026-01-20csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu erzeugen, Sicherheitsmaßnahmen zu umgehen und nicht näher spezifizierte Angriffe zu starten.

  • GHSA-x3mh-jvjw-3xwxopenssl-src's infinite loop in `BN_mod_sqrt()` reachable when parsing certificates2022-03-16ghsa · osvUS

    The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

  • ICSA-22-132-02Mitsubishi Electric MELSOFT iQ AppPortal2022-05-12icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could result in a denial-of-service condition, malicious program execution, information disclosure, information tampering, or authentication bypass.

  • ICSA-22-167-14Siemens OpenSSL Affected Industrial Products2022-06-14icsa · cisa_csaf_otUS

    A vulnerability in the openSSL component (CVE-2022-0778, [0]) could allow an attacker to create a denial of service condition by providing specially crafted elliptic curve certificates to products that use a vulnerable version of openSSL. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available. [0] https://www.openssl.org/news/secadv/20220315.txt

  • ICSA-22-221-01Mitsubishi Electric Multiple Factory Automation Products (Update B)2022-08-30icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could create a denial-of-service condition or enable arbitrary code execution.

  • ICSA-22-272-02Hitachi Energy MicroSCADA Pro X SYS6002022-09-29icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could cause the affected modules in the product to stop working.

  • ICSA-23-059-01Hitachi Energy Gateway Station2023-03-06icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could cause affected modules to stop working.

  • ICSA-23-143-02Hitachi Energy's RTU500 Series Product (UPDATE B)2023-05-05icsa · cisa_csaf_otUS

    Successful exploitation of these vulnerabilities could allow an attacker to crash the device being accessed or cause a denial-of-service condition.

  • ICSA-23-348-10Siemens SIMATIC S7-15002023-12-12icsa · cisa_csaf_otUS

    Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version >= V3.1.0 and < V3.1.5 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). These GNU/Linux vulnerabilities have been externally identified. Siemens has released new versions for the affected products and recommends to update to the latest versions. Note: This SSA advises vulnerabilities for firmware version V3.1 only; for versions < V3.1 refer to Siemens Security Bulletin SSB-439005 ( https://cert-portal.siemens.com/productcert/html/ssb-439005.html).

  • ICSA-24-046-02Siemens SIDIS Prime2024-02-13icsa · cisa_csaf_otUS

    SIDIS Prime before V4.0.400 is affected by multiple vulnerabilities in the components OPC UA and OpenSSL, that could allow an unauthenticated attacker with access to the network where SIDIS Prime is installed to reuse OPC UA client credentials, create a denial of service condition of the SIDIS Prime OPC UA client, or create a denial of service condition of the SIDIS Prime TLS service. Siemens has released a new version of SIDIS Prime and recommends to update to the latest version.

  • ICSA-25-226-21Siemens BFCClient2025-08-12icsa · cisa_csaf_otUS

    Siemens BFCClient contains multiple vulnerabilities in the integrated OpenSSL component that could allow an attacker to read memory contents, to change the application behaviour or to create a denial of service condition. Siemens has released a new version for BFCClient and recommends to update to the latest version.

  • ICSA-26-111-07Siemens SCALANCE2026-04-14icsa · cisa_csaf_otUS

    SCALANCE W-700 IEEE 802.11n family before V6.6.0 are affected by multiple vulnerabilities. Siemens has released a new version for SCALANCE W-700 IEEE 802.11n family and recommends to update to the latest version.

  • BIT-mariadb-2022-0778Infinite loop in BN_mod_sqrt() reachable when parsing certificates2024-03-06vendor · osvUS

    The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

  • BIT-mariadb-min-2022-0778Infinite loop in BN_mod_sqrt() reachable when parsing certificates2025-06-10vendor · osvUS

    The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

  • BIT-mysql-client-2022-0778Infinite loop in BN_mod_sqrt() reachable when parsing certificates2024-03-06vendor · osvUS

    The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

  • BIT-node-2022-0778Infinite loop in BN_mod_sqrt() reachable when parsing certificates2024-03-06vendor · osvUS

    The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

  • BIT-node-min-2022-0778Infinite loop in BN_mod_sqrt() reachable when parsing certificates2024-12-16vendor · osvUS

    The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

  • RUSTSEC-2022-0014Infinite loop in `BN_mod_sqrt()` reachable when parsing certificates2022-03-15vendor · osvUS

    The `BN_mod_sqrt()` function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the `BN_mod_sqrt()` where the attacker can control the parameter values are vulnerable to this DoS issue.

08

also known as (11)

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09

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cnnvdenisa_euvdfstec_bduosvcert_bundcisa_csaf_otncsc_nlsick_psirtsiemens_psirtphoenix_contact_psirtNVDCVE.orgMITRE
published 2022-03-15modified 2026-10-14
11

references (179)

External citations — patches, advisories, analysis.

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