PT-2022-11085 · Linux+1 · Linux+1

Published 2022-01-05 · Updated 2023-02-03 · CVE-2021-3982

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux distributions (affected versions not specified)

Description The issue concerns Linux distributions that use CAP SYS NICE for gnome-shell, potentially exposing them to a privilege escalation problem. An attacker with low privilege permissions can exploit the current implementation of CAP SYS NICE to load code, increase its process scheduler priority, and possibly cause a denial of service (DoS) for other services running on the same machine.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-273

Related Identifiers

CVE-2021-3982

MGASA-2022-0007

Affected Products

Linux

Gnome Shell

References · 14

• 🔥 https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4711 · Exploit
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/SCLTOBHCAJ5W2MER2M53HAM2IBEBL2AC · Vendor Advisory
• https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2060 · Patch
• https://osv.dev/vulnerability/CVE-2021-3982 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3982 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-3982 · Vendor Advisory
• https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2284 · Patch
• https://osv.dev/vulnerability/MGASA-2022-0007 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3982 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-3982 · Security Note
• https://advisories.mageia.org/MGASA-2022-0007.html · Security Note
• https://t.me/cibsecurity/41672 · Telegram Post
• https://t.me/cvenotify/38619 · Telegram Post
• https://bugs.mageia.org/show_bug.cgi?id=29825 · Note