penSSH 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."
18 Nov 2025, 22:15
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18 Nov 2025, 20:15
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17 Nov 2025, 16:15
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04 Nov 2025, 22:15
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22 Sep 2025, 17:16
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| Summary | (en) 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." | |
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21 Nov 2024, 08:38
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| References | () https://access.redhat.com/security/cve/CVE-2023-51767 - Third Party Advisory | |
| References | () https://arxiv.org/abs/2309.02545 - Technical Description | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2255850 - Issue Tracking, Third Party Advisory | |
| References | () https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/auth-passwd.c#L77 - Product | |
| References | () https://github.com/openssh/openssh-portable/blob/8241b9c0529228b4b86d88b1a6076fb9f97e4a99/monitor.c#L878 - Product | |
| References | () https://security.netapp.com/advisory/ntap-20240125-0006/ - Third Party Advisory | |
| References | () https://ubuntu.com/security/CVE-2023-51767 - Third Party Advisory |
Published : 2023-12-24 07:15
Updated : 2025-11-18 22:15
NVD link : CVE-2023-51767
Mitre link : CVE-2023-51767
CVE.ORG link : CVE-2023-51767
JSON object : View