CVE-2021-44731
HIGH 7.8EPSS 0.9%
A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
- CVSS v3.1
- 7.8 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS v3.1
- 7.8 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS v2.0
- 6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C - EPSS
- 0.94% chance of exploitation in the next 30 days, 59th percentile
- Published
- 2022-02-17
- Updated
- 2024-08-04
Proof-of-concept exploits (3)
- http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-R…
- http://www.openwall.com/lists/oss-security/2022/02/23/1
- deeexcee-io/CVE-2021-44731-snap-confine-SUID4★ · 2023-07-10