Improper Check for Dropped Privileges Affecting openssh-server-sysvinit package, versions <0:7.4p1-22.el7_9


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (24th percentile)

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  • Snyk IDSNYK-CENTOS7-OPENSSHSERVERSYSVINIT-2186690
  • published30 Sept 2021
  • disclosed26 Sept 2021

Introduced: 26 Sep 2021

CVE-2021-41617  (opens in a new tab)
CWE-273  (opens in a new tab)

How to fix?

Upgrade Centos:7 openssh-server-sysvinit to version 0:7.4p1-22.el7_9 or higher.

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 Centos. See How to fix? for Centos:7 relevant fixed versions and status.

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.

CVSS Scores

version 3.1