aio-libs aiohttp up to 3.9.1 Symbolic Links path traversal

Summaryinfo

A vulnerability labeled as critical has been found in aio-libs aiohttp up to 3.9.1. This impacts an unknown function of the component Symbolic Links Handler. The manipulation results in path traversal. This vulnerability is known as CVE-2024-23334. It is possible to launch the attack remotely. Furthermore, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in aio-libs aiohttp up to 3.9.1. Affected is an unknown part of the component Symbolic Links Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. When using aiohttp as a web server and configuring static routes, it is necessary to specify the root path for static files. Additionally, the option 'follow_symlinks' can be used to determine whether to follow symbolic links outside the static root directory. When 'follow_symlinks' is set to True, there is no validation to check if reading a file is within the root directory. This can lead to directory traversal vulnerabilities, resulting in unauthorized access to arbitrary files on the system, even when symlinks are not present. Disabling follow_symlinks and using a reverse proxy are encouraged mitigations. Version 3.9.2 fixes this issue.

The weakness was published 01/30/2024 as GHSA-5h86-8mv2-jq9f. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-23334 since 01/15/2024. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 212515 (Debian dsa-5828 : python-aiohttp-doc - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.9.2 eliminates this vulnerability. Applying the patch 1c335944d6a8b1298baf179b7c0b3069f10c514b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Exploit-DB (52474), Tenable (212515) and CERT Bund (WID-SEC-2024-0949). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Fedora Linux
• Red Hat Enterprise Linux
• Red Hat Satellite
• IBM MQ

Productinfo

Vendor

• aio-libs

Name

• aiohttp

Version

• 3.9.0
• 3.9.1

License

• open-source

Website

• Product: https://github.com/aio-libs/aiohttp/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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