Improper Authentication Affecting openssh-clients package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (22nd percentile)

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  • Snyk IDSNYK-CENTOS7-OPENSSHCLIENTS-6139754
  • 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 Centos:7 openssh-clients.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-clients package and not the openssh-clients package as distributed by Centos. See How to fix? for Centos: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