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GLSA
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Joined: 12 May 2004
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PostPosted: Thu Jan 27, 2022 6:26 am    Post subject: [ GLSA 202201-01 ] Polkit Reply with quote

Gentoo Linux Security Advisory

Title: Polkit: Local privilege escalation (GLSA 202201-01)
Severity: high
Exploitable: local
Date: 2022-01-27
Bug(s): #832057
ID: 202201-01

Synopsis

A vulnerability in polkit could lead to local root privilege escalation.


Background

polkit is a toolkit for managing policies related to unprivileged processes communicating with privileged process.

Affected Packages

Package: sys-auth/polkit
Vulnerable: < 0.120-r2
Unaffected: >= 0.120-r2
Architectures: All supported architectures


Description

Flawed input validation of arguments was discovered in the 'pkexec' program's main() function.

Impact

A local attacker could achieve root privilege escalation.

Workaround

Run the following command as root:
# chmod 0755 /usr/bin/pkexec

Resolution

Upgrade Polkit to a patched version.
Code:
# emerge --sync
         # emerge --ask --verbose ">=sys-auth/polkit-0.120-r2"


References

CVE-2021-4034


Last edited by GLSA on Tue Feb 01, 2022 4:17 am; edited 1 time in total
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