CVE-2023-29409

mediumpriority · track · 32EPSS 0.016 · 76 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

1.60% (76th) EPSS

CVSS 5.3 · medium

Is it mine?

110 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-26

Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.

remediations

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

A vendor fix is available.

FixedSIMATIC RTLS Locating Manager (6GT2780-0DA00)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA10)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA20)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA30)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-1EA10)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-1EA20)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-1EA30)siemens_psirt
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSCALANCE XCH328 (6GK5328-4TS01-2EC2)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCM324 (6GK5324-8TS01-2AC2)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCM328 (6GK5328-4TS01-2AC2)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCM332 (6GK5332-0GA01-2AC2)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3)siemens_psirt
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCH328 (6GK5328-4TS01-2EC2)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCM324 (6GK5324-8TS01-2AC2)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCM328 (6GK5328-4TS01-2AC2)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XCM332 (6GK5332-0GA01-2AC2)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3)cisa_csaf_ot
Update to V2.4 or later version
https://support.industry.siemens.com/cs/ww/en/view/109826613/
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA00)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA10)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA20)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-0DA30)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-1EA10)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-1EA20)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
FixedSIMATIC RTLS Locating Manager (6GT2780-1EA30)cisa_csaf_ot
Update to V3.0.1.1 or later version The update is available from Siemens Online Software Delivery (OSD).
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA00)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA10)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA20)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA30)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-1EA10)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-1EA20)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-1EA30)siemens_psirt
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA00)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA10)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA20)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-0DA30)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-1EA10)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-1EA20)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines
MitigationSIMATIC RTLS Locating Manager (6GT2780-1EA30)cisa_csaf_ot
Apply security hardening of the Windows Server, where the RTLS Locating Manager is installed on, in accordance with your corporate security policies or up-to-date hardening guidelines

cvss

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

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:Csecondary · CISA US

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Psecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimaryCWE-400USCWE-400USCWE-400US

exploits (1)

Public proof-of-concept and weaponised exploit code.

mateusz834/CVE-2023-29409 CVE-2023-29409 reproducerPoC · poc_in_github

affected products (110)

Products and version ranges known to be affected.

Dell ECS <3.8.1.0all versionscert_bundDE
Dell PowerEdgeall versionscert_bundDEcpe:/h:dell:poweredge:-
IBM InfoSphere Information Serverall versionscert_bundDEcpe:/a:ibm:infosphere_information_server:-
Dell ECS< 3.8.1.0cert_bundDE
SIMATIC RTLS Locating Manager (6GT2780-0DA00)all versionscisa_csaf_otUS
SIMATIC RTLS Locating Manager (6GT2780-0DA10)all versionscisa_csaf_otUS
SIMATIC RTLS Locating Manager (6GT2780-0DA20)all versionscisa_csaf_otUS
SIMATIC RTLS Locating Manager (6GT2780-0DA30)all versionscisa_csaf_otUS
SIMATIC RTLS Locating Manager (6GT2780-1EA10)all versionscisa_csaf_otUS
SIMATIC RTLS Locating Manager (6GT2780-1EA20)all versionscisa_csaf_otUS
SIMATIC RTLS Locating Manager (6GT2780-1EA30)all versionscisa_csaf_otUS
Siemens SCALANCE XCH328 (6GK5328-4TS01-2EC2)< V2.4cisa_csaf_otUS
Siemens SCALANCE XCM324 (6GK5324-8TS01-2AC2)< V2.4cisa_csaf_otUS
Siemens SCALANCE XCM328 (6GK5328-4TS01-2AC2)< V2.4cisa_csaf_otUS
Siemens SCALANCE XCM332 (6GK5332-0GA01-2AC2)< V2.4cisa_csaf_otUS
Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3)< V2.4cisa_csaf_otUS
Siemens SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3)< V2.4cisa_csaf_otUS
Siemens SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3)< V2.4cisa_csaf_otUS
Siemens SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3)< V2.4cisa_csaf_otUS
Siemens SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3)< V2.4cisa_csaf_otUS

showing 20 of 110

advisories (10)

Vendor and ecosystem advisories describing this.

SSA-093430SSA-093430: Multiple Vulnerabilities in SIMATIC RTLS Locating Manager before V3.02024-05-14csaf · siemens_psirtDE
Siemens has released a new version for SIMATIC RTLS Locating Manager and recommends to update to the latest version.
SSA-806742SSA-806742: Multiple Vulnerabilities in SCALANCE XCM-/XRM-300 before V2.42024-02-13csaf · siemens_psirtDE
SCALANCE XCM-/XRM-300 before V2.4 is affected by multiple vulnerabilities. Siemens has released an update for SCALANCE X-300 and recommends to update to the latest version.
WID-SEC-W-2023-1947Golang Go: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-08-02csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Golang Go ausnutzen, um einen Denial of Service Angriff durchzuführen.
WID-SEC-W-2023-2917Xerox FreeFlow Print Server: Mehrere SchwachstellenDeutsch2023-11-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.
WID-SEC-W-2023-3146IBM MQ Operator and Queue manager: Mehrere SchwachstellenDeutsch2023-12-13csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM MQ Operator and Queue manager ausnutzen, um einen Denial of Service Angriff durchzuführen, Informationen offenzulegen oder Sicherheitsmaßnahmen zu umgehen.
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.
ICSA-24-046-11Siemens SCALANCE XCM-/XRM-3002024-02-13icsa · cisa_csaf_otUS
SCALANCE XCM-/XRM-300 before V2.4 is affected by multiple vulnerabilities. Siemens has released an update for SCALANCE X-300 and recommends to update to the latest version.
ICSA-24-137-07Siemens SIMATIC RTLS Locating Manager2024-05-14icsa · cisa_csaf_otUS
Siemens has released a new version for SIMATIC RTLS Locating Manager and recommends to update to the latest version.
BIT-golang-2023-29409Large RSA keys can cause high CPU usage in crypto/tls2024-03-06vendor · osvUS
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.
GO-2023-1987Large RSA keys can cause high CPU usage in crypto/tls2023-08-02vendor · osvUS
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund cisa_csaf_ot siemens_psirt NVD CVE.org MITRE

published 2023-08-02modified 2026-06-17

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+9598 more

references (26)

External citations — patches, advisories, analysis.

scry

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