CVE-2021-3618

mediumPriorität · verfolgen · 31EPSS 0.020 · 81. PerzentilDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
2.03% (81st) EPSS
CVSS 5.8 · medium
Is it mine?
40 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · bewertet 2026-10-22

ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Noch kein Hersteller-Fix; ein Workaround ist verfügbar.

  • WorkaroundSICK TDC-E210GC all Firmware versionssick_psirt

    Please make sure that only trusted entities have access to the device. Furthermore, you should apply the following General Security Measures when operating the product to mitigate the associated security risk. The collected resources "SICK Operating Guidelines" and "ICS-CERT recommended practices on Industrial Security" could help to implement the general security practices.

  • WorkaroundEndress+Hauser SSG-E210GC all Firmware versionssick_psirt

    Please make sure that only trusted entities have access to the device. Furthermore, you should apply the following General Security Measures when operating the product to mitigate the associated security risk. The collected resources "SICK Operating Guidelines" and "ICS-CERT recommended practices on Industrial Security" could help to implement the general security practices.

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.4
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.8–7.4

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 4.9
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 2.2 · Auswirkung 5.2
v3.17.4highAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · SICK PSIRT DE
v3.16.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
03

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-295USCWE-295USCWE-295US
04

betroffene Produkte (40)

Betroffene Produkte und Versionsbereiche.

20 von 40 angezeigt
05

Advisories (6)

Hersteller- und Ökosystem-Meldungen dazu.

  • SCA-2025-0009Vulnerabilities affecting SICK TDC-E210GC2025-08-01csaf · sick_psirtDE

    SICK has identified multiple vulnerabilities in the SICK TDC-E210GC product. The advisory includes a total of 23 vulnerabilities, of which 14 are confirmed as affected and 9 as known not affected. At this time, SICK is not aware of any public exploits specifically targeting these vulnerabilities. Customers are strongly advised to apply the recommended workaround for the affected vulnerabilities to reduce potential risk.

  • SCA-2025-0011Vulnerabilities affecting Endress+Hauser SSG-E210GC2025-10-02csaf · sick_psirtDE

    Several vulnerabilities in the Endress+Hauser SSG-E210GC product were discoverd. The advisory includes a total of 23 vulnerabilities, of which 14 are confirmed as affected and 9 as known not affected.

  • WID-SEC-W-2022-1482TLS Implementierungen: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2022-01-09csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in verschiedenen TLS Implementierungen ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

  • WID-SEC-W-2023-2031Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2023-08-09csaf · cert_bundDE

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

  • BIT-nginx-2021-36182024-03-06vendor · osvUS

    ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

  • BIT-nginx-gateway-2021-36182025-12-03vendor · osvUS

    ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

06

auch bekannt als (6)

Weitere Namen und Kennungen dieser Entität.

07

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bduosvcert_bundsick_psirtNVDCVE.orgMITRE
veröffentlicht 2022-03-23geändert 2026-09-23
08

Referenzen (29)

Externe Belege — Patches, Meldungen, Analysen.

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

Kostenloser Scan