Incorrect Privilege Assignment Affecting openssh-server package, versions <0:6.6.1p1-22.el7


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL7-OPENSSHSERVER-4580577
  • published26 Jul 2021
  • disclosed11 Aug 2015

Introduced: 11 Aug 2015

CVE-2015-6563  (opens in a new tab)
CWE-266  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:7 openssh-server to version 0:6.6.1p1-22.el7 or higher.
This issue was patched in RHSA-2015:2088.

NVD Description

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

The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.

CVSS Scores

version 3.1