CVE-2021-26910

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

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

6.9 MEDIUMAV: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

References

• CVE Record
• NVD entry

Related

• CVE-2021-26904
• CVE-2021-26912
• CVE-2021-26903
• CVE-2021-26913
• CVE-2021-26887
• CVE-2021-26914