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Improper Privilege Management Affecting openssh package, versions <1:8.2p1-4ubuntu0.11

Severity

 Recommended
low

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.06% (24th percentile)

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  • Snyk ID SNYK-UBUNTU2004-OPENSSH-1726887
  • published 29 Sep 2021
  • disclosed 26 Sep 2021
Report a new vulnerability Found a mistake?

Introduced: 26 Sep 2021

CVE-2021-41617 Open this link in a new tab
CWE-269 Open this link in a new tab

How to fix?

Upgrade Ubuntu:20.04 openssh to version 1:8.2p1-4ubuntu0.11 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 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.

References

CVSS Scores

version 3.1
Expand this section

NVD

7 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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SUSE

7 high
Expand this section

Red Hat

7 high