SB2024081446 - Path traversal via symbolic links in aiohttp
Published: August 14, 2024
Security Bulletin ID
SB2024081446
Severity
High
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) UNIX symbolic link following (CVE-ID: CVE-2024-42367)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a symlink following issue when handling static routes which contain files with compressed variants in the FileResponse class even when "follow_symlinks=False" is set. A remote attacker can pass a specially crafted file to the application and perform directory traversal attacks.
Remediation
Install update from vendor's website.
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jwhx-xcg6-8xhj
- https://github.com/aio-libs/aiohttp/pull/8653
- https://github.com/aio-libs/aiohttp/commit/ce2e9758814527589b10759a20783fb03b98339f
- https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_fileresponse.py#L177
- https://github.com/aio-libs/aiohttp/blob/e0ff5246e1d29b7710ab1a2bbc972b48169f1c05/aiohttp/web_urldispatcher.py#L674