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Vulnerability Details : 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.
Publish Date : 2021-02-08 Last Update Date : 2022-05-23
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- CVSS Scores & Vulnerability Types

CVSS Score
6.9
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 367

- Products Affected By CVE-2021-26910

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 Application Firejail Project Firejail * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 2
Firejail Project Firejail 1

- References For CVE-2021-26910

https://github.com/netblue30/firejail/commit/97d8a03cad19501f017587cc4e47d8418273834b
https://unparalleled.eu/publications/2021/advisory-unpar-2021-0.txt
https://github.com/netblue30/firejail/releases/tag/0.9.64.4
https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/
http://www.openwall.com/lists/oss-security/2021/02/09/1
MLIST [oss-security] 20210209 Re: [cve-pending] Firejail: root privilege escalation in OverlayFS code
https://www.debian.org/security/2021/dsa-4849
DEBIAN DSA-4849
https://security.gentoo.org/glsa/202105-19
GENTOO GLSA-202105-19
https://lists.debian.org/debian-lts-announce/2021/02/msg00015.html
MLIST [debian-lts-announce] 20210211 [SECURITY] [DLA 2554-1] firejail security update

- Metasploit Modules Related To CVE-2021-26910

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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