Description
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."
References
github.com/...b9c0529228b4b86d88b1a6076fb9f97e4a99/monitor.c
github.com/...529228b4b86d88b1a6076fb9f97e4a99/auth-passwd.c
bugzilla.redhat.com/show_bug.cgi?id=2255850
access.redhat.com/security/cve/CVE-2023-51767
ubuntu.com/security/CVE-2023-51767
security.netapp.com/advisory/ntap-20240125-0006/
www.openwall.com/lists/oss-security/2025/10/01/1
www.openwall.com/lists/oss-security/2025/09/22/1
www.openwall.com/lists/oss-security/2025/09/24/4
www.openwall.com/lists/oss-security/2025/09/22/2
www.openwall.com/lists/oss-security/2025/09/23/4
www.openwall.com/lists/oss-security/2025/10/01/2
www.openwall.com/lists/oss-security/2025/09/26/2
www.openwall.com/lists/oss-security/2025/09/26/4
www.openwall.com/lists/oss-security/2025/09/27/1
www.openwall.com/lists/oss-security/2025/09/27/2
www.openwall.com/lists/oss-security/2025/09/27/3
www.openwall.com/lists/oss-security/2025/09/27/5
www.openwall.com/lists/oss-security/2025/09/27/6
www.openwall.com/lists/oss-security/2025/09/27/7
www.openwall.com/lists/oss-security/2025/09/29/4
www.openwall.com/lists/oss-security/2025/09/29/5
www.openwall.com/lists/oss-security/2025/09/23/1
www.openwall.com/lists/oss-security/2025/09/29/6
www.openwall.com/lists/oss-security/2025/09/23/3
www.openwall.com/lists/oss-security/2025/09/23/5
www.openwall.com/lists/oss-security/2025/09/24/7
www.openwall.com/lists/oss-security/2025/09/25/2
www.openwall.com/lists/oss-security/2025/09/25/6
www.openwall.com/lists/oss-security/2025/09/27/4
www.openwall.com/lists/oss-security/2025/09/28/7
www.openwall.com/lists/oss-security/2025/09/29/1
github.com/...b9c0529228b4b86d88b1a6076fb9f97e4a99/monitor.c
github.com/...529228b4b86d88b1a6076fb9f97e4a99/auth-passwd.c
bugzilla.redhat.com/show_bug.cgi?id=2255850
access.redhat.com/security/cve/CVE-2023-51767
ubuntu.com/security/CVE-2023-51767
security.netapp.com/advisory/ntap-20240125-0006/
www.openwall.com/lists/oss-security/2025/09/22/1
