Resource exhaustion in polkit - CVE-2021-4115
Published: March 13, 2022
Vulnerability identifier: #VU61268
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2021-4115
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Freedesktop.org
Affected software:
polkit
polkit
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to process file descriptor exhaustion in polkit. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2021-4115
Install updates from vendor's website.
Sources
- https://access.redhat.com/security/cve/cve-2021-4115
- https://gitlab.com/redhat/centos-stream/rpms/polkit/-/merge_requests/6/diffs?commit_id=bf900df04dc390d389e59aa10942b0f2b15c531e
- https://gitlab.freedesktop.org/polkit/polkit/-/issues/141
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VGKWCBS6IDZYYDYM2WIWJM5BL7QQTWPF/