CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

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 : 2021-05-26
Search Twitter   Search YouTube   Search Google

- 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

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://lists.debian.org/debian-lts-announce/2021/02/msg00015.html
MLIST [debian-lts-announce] 20210211 [SECURITY] [DLA 2554-1] firejail security update
https://unparalleled.eu/blog/2021/20210208-rigged-race-against-firejail-for-local-root/
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://security.gentoo.org/glsa/202105-19
GENTOO GLSA-202105-19

- 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)


CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.