Improper Authentication Affecting openssh-server-sysvinit package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (23rd percentile)

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  • Snyk IDSNYK-RHEL7-OPENSSHSERVERSYSVINIT-6139743
  • published26 Dec 2023
  • disclosed24 Dec 2023

Introduced: 24 Dec 2023

CVE-2023-51767  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 openssh-server-sysvinit.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-server-sysvinit package and not the openssh-server-sysvinit package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

OpenSSH through 9.6, 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.

CVSS Scores

version 3.1