Back to Database
Status published
High
CVE-2021-26910
Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-26910
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b
- https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt
- https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/
- https://github.com/netblue30/firejail/releases/tag/0.9.64.4
- http://www.openwall.com/lists/oss-security/2021/02/09/1
- https://www.debian.org/security/2021/dsa-4849
- https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html
- https://security.gentoo.org/glsa/202105-19
More from firejail project
View All →CVE-2022-31214
A Privilege Context Switching issue was discovered in join.c in...
High
7.8
CVE-2020-17368
Firejail through 0.9.62 mishandles shell metacharacters during use of the...
Critical
9.8
CVE-2020-17367
Firejail through 0.9.62 does not honor the -- end-of-options indicator...
High
7.8
CVE-2019-12589
In Firejail before 0.9.60, seccomp filters are writable inside the...
High
8.8
CVE-2019-12499
Firejail before 0.9.60 allows truncation (resizing to length 0) of...
High
8.1
Affected Vendor
firejail project
View all reports →Affected Software
firejail, debian linux
Vulnerable Versions:
0, 9.0, 10.0
Timeline
Official Publish:
February 8th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.