OpenSSH through 10.0, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges. NOTE: this is disputed by the Supplier, who states "we do not consider it to be the application's responsibility to defend against platform architectural weaknesses."
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 7.0 · openbsd, fedoraproject, redhatNVD modified 2026-10-15 01:17
Affected (CPE criteria) 4
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
References 42
- https://access.redhat.com/security/cve/CVE-2023-51767 Third Party Advisory
- https://arxiv.org/abs/2309.02545 Technical Description
- https://bugzilla.redhat.com/show_bug.cgi?id=2255850 Issue Tracking, Third Party Advisory
- https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/auth-passwd.c#L77 Product
- https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/monitor.c#L878 Product
- https://security.netapp.com/advisory/ntap-20240125-0006/ Third Party Advisory
- https://ubuntu.com/security/CVE-2023-51767 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2025/09/22/1
- http://www.openwall.com/lists/oss-security/2025/09/22/1
- http://www.openwall.com/lists/oss-security/2025/09/22/2
- http://www.openwall.com/lists/oss-security/2025/09/23/1
- http://www.openwall.com/lists/oss-security/2025/09/23/3
- http://www.openwall.com/lists/oss-security/2025/09/23/4
- http://www.openwall.com/lists/oss-security/2025/09/23/5
- http://www.openwall.com/lists/oss-security/2025/09/24/4
- http://www.openwall.com/lists/oss-security/2025/09/24/7
- http://www.openwall.com/lists/oss-security/2025/09/25/2
- http://www.openwall.com/lists/oss-security/2025/09/25/6
- http://www.openwall.com/lists/oss-security/2025/09/26/2
- http://www.openwall.com/lists/oss-security/2025/09/26/4
- http://www.openwall.com/lists/oss-security/2025/09/27/1
- http://www.openwall.com/lists/oss-security/2025/09/27/2
- http://www.openwall.com/lists/oss-security/2025/09/27/3
- http://www.openwall.com/lists/oss-security/2025/09/27/4
- http://www.openwall.com/lists/oss-security/2025/09/27/5
- http://www.openwall.com/lists/oss-security/2025/09/27/6
- http://www.openwall.com/lists/oss-security/2025/09/27/7
- http://www.openwall.com/lists/oss-security/2025/09/28/7
- http://www.openwall.com/lists/oss-security/2025/09/29/1
- http://www.openwall.com/lists/oss-security/2025/09/29/4
- http://www.openwall.com/lists/oss-security/2025/09/29/5
- http://www.openwall.com/lists/oss-security/2025/09/29/6
- http://www.openwall.com/lists/oss-security/2025/10/01/1
- http://www.openwall.com/lists/oss-security/2025/10/01/2
- https://access.redhat.com/security/cve/CVE-2023-51767 Third Party Advisory
- https://arxiv.org/abs/2309.02545 Technical Description
- https://bugzilla.redhat.com/show_bug.cgi?id=2255850 Issue Tracking, Third Party Advisory
- https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/auth-passwd.c#L77 Product
- https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/monitor.c#L878 Product
- https://security.netapp.com/advisory/ntap-20240125-0006/ Third Party Advisory
- https://ubuntu.com/security/CVE-2023-51767 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html