CVE-2021-26910
HIGH 7.0EPSS 0.4%
Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions because there is a TOCTOU race condition between a stat operation and an OverlayFS mount operation.
- CVSS v3.1 NVD
- 7.0 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 MITRE
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C - EPSS
- 0.44% chance of exploitation in the next 30 days, 37th percentile
- Published
- 2021-02-08
- Updated
- 2024-08-03
Proof-of-concept exploits (2)
- http://www.openwall.com/lists/oss-security/2021/02/09/1
- https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt
Security advisories
- netblue30/firejail/releases/tag/0.9.64.4
- https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html
- https://security.gentoo.org/glsa/202105-19
- https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root
- https://www.debian.org/security/2021/dsa-4849