CVE-2021-26910

Description

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.

References

https://www.debian.org/security/2021/dsa-4849

https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt

https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/

https://security.gentoo.org/glsa/202105-19

https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html

https://github.com/netblue30/firejail/releases/tag/0.9.64.4

https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b

http://www.openwall.com/lists/oss-security/2021/02/09/1

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3