UBUNTU-CVE-2021-41617

Advisory lineage Upstream: 1 Downstream: 2
Upstream
CVE-2021-41617
Published: 26 Sept 2021, 19:15
Last modified:20 May 2026, 16:05

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Sept 2021, 19:15
Published
Vulnerability first disclosed
20 May 2026, 16:05
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • ubuntu•openssh

    all | < 1:7.2p2-4ubuntu2.10+esm2 | < 1:7.2p2-4ubuntu2.fips.2.10.3 | < 1:8.2p1-4ubuntu0.11 | < 1:8.2p1-4ubuntu0.fips.0.11

  • ubuntu•openssh-ssh1

    all | all | all | all | all | all

References (7)