SB2022011811 - Path traversal in Flatpak
Published: January 18, 2022 Updated: February 3, 2022
Security Bulletin ID
SB2022011811
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Path traversal (CVE-ID: CVE-2022-21682)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when flatpak-builder applies "finish-args" last in the build. A remote authenticated attacker can send a specially crafted HTTP request and create arbitrary files on the system.
Remediation
Install update from vendor's website.
References
- https://github.com/flatpak/flatpak/security/advisories/GHSA-8ch7-5j3h-g4fx
- https://github.com/flatpak/flatpak/commit/4d11f77aa7fd3e64cfa80af89d92567ab9e8e6fa
- https://github.com/flatpak/flatpak/commit/445bddeee657fdc8d2a0a1f0de12975400d4fc1a
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/APFTBYGJJVJPFVHRXUW5PII5XOAFI4KH/
- https://github.com/flatpak/flatpak/releases/tag/1.8.7