CVE-2021-26910
published 2021-02-08CVE-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…
PriorityP432high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.44%
35.5th percentile
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | firejail | < firejail 0.9.64.4-1 (bookworm) | firejail 0.9.64.4-1 (bookworm) |
| firejail_project | firejail | < 0.9.64.4 | 0.9.64.4 |
| firejail_project | firejail | >= 0 < 0.9.64.4-1 | 0.9.64.4-1 |
| firejail_project | firejail | >= 0 < 0.9.64.4-1 | 0.9.64.4-1 |
| firejail_project | firejail | >= 0 < 0.9.64.4-1 | 0.9.64.4-1 |
| firejail_project | firejail | >= 0 < 0.9.64.4-1 | 0.9.64.4-1 |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.9MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
osv7.0HIGH
vendor_debian7.8HIGH
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Ubuntu
Firejail vulnerability
vendor_ubuntu·2021-11-11
CVE-2021-26910 Firejail vulnerability
Title: Firejail vulnerability
Summary: Firejail could be made to overwrite files as the administrator.
Roman Fiedler discovered that a race condition existed in Firejail
when using OverlayFS to prevent writes to the underlying file system. A
local attacker could use this to gain administrative privileges. Note:
this update disables support for OverlayFS in Firejail.
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2021-26910: firejail - Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions...
vendor_debian·2021·CVSS 7.8
CVE-2021-26910 [HIGH] CVE-2021-26910: firejail - Firejail before 0.9.64.4 allows attackers to bypass intended access restrictions...
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.
Scope: local
bookworm: resolved (fixed in 0.9.64.4-1)
bullseye: resolved (fixed in 0.9.64.4-1)
forky: resolved (fixed in 0.9.64.4-1)
sid: resolved (fixed in 0.9.64.4-1)
trixie: resolved (fixed in 0.9.64.4-1)
GHSA
GHSA-2q4h-h5jp-942w: Firejail before 0
ghsa_unreviewed·2022-05-24
CVE-2021-26910 [HIGH] CWE-367 GHSA-2q4h-h5jp-942w: Firejail before 0
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.
OSV
CVE-2021-26910: Firejail before 0
osv·2021-02-08·CVSS 7.0
CVE-2021-26910 [HIGH] CVE-2021-26910: Firejail before 0
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://www.openwall.com/lists/oss-security/2021/02/09/1https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834bhttps://github.com/netblue30/firejail/releases/tag/0.9.64.4https://lists.debian.org/debian-lts-announce/2021/02/msg00015.htmlhttps://security.gentoo.org/glsa/202105-19https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txthttps://www.debian.org/security/2021/dsa-4849http://www.openwall.com/lists/oss-security/2021/02/09/1https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834bhttps://github.com/netblue30/firejail/releases/tag/0.9.64.4https://lists.debian.org/debian-lts-announce/2021/02/msg00015.htmlhttps://security.gentoo.org/glsa/202105-19https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txthttps://www.debian.org/security/2021/dsa-4849
2021-02-08
Published