CVE-2023-51767

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
Link Resource
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
Configurations

Configuration 1 (hide)

cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

History

18 Nov 2025, 22:15

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2025/09/27/4 -
  • () http://www.openwall.com/lists/oss-security/2025/09/28/7 -
  • () http://www.openwall.com/lists/oss-security/2025/09/29/1 -

18 Nov 2025, 20:15

Type Values Removed Values Added
References
  • () 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/2025/09/23/5 -
  • () 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/2025/09/27/5 -
  • () 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/2025/09/29/4 -
  • () http://www.openwall.com/lists/oss-security/2025/09/29/5 -
  • () http://www.openwall.com/lists/oss-security/2025/09/29/6 -

17 Nov 2025, 16:15

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2025/10/01/2 -

04 Nov 2025, 22:15

Type Values Removed Values Added
References
  • () 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/2025/09/23/4 -
  • () http://www.openwall.com/lists/oss-security/2025/09/24/4 -
  • () http://www.openwall.com/lists/oss-security/2025/10/01/1 -

Information

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

Products Affected

openbsd

  • openssh

redhat

  • enterprise_linux

fedoraproject

  • fedora