Python CPython up to 3.13.0 zipfile namelist/iterdir/extractall infinite loop

Summaryinfo

A vulnerability was found in Python CPython up to 3.13.0 and classified as problematic. This vulnerability affects the function namelist/iterdir/extractall of the component zipfile Module. Executing a manipulation can lead to infinite loop. This vulnerability appears as CVE-2024-8088. The attack may be performed from remote. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as critical was found in Python CPython up to 3.13.0. This vulnerability affects the function namelist/iterdir/extractall of the component zipfile Module. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. CVE summarizes:

There is a HIGH severity vulnerability affecting the CPython "zipfile" module. When iterating over names of entries in a zip archive (for example, methods of "zipfile.ZipFile" like "namelist()", "iterdir()", "extractall()", etc) the process can be put into an infinite loop with a maliciously crafted zip archive. This defect applies when reading only metadata or extracting the contents of the zip archive. Programs that are not handling user-controlled zip archives are not affected.

The advisory is shared for download at mail.python.org. This vulnerability was named CVE-2024-8088 since 08/22/2024. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 207871 (CBL Mariner 2.0 Security Update: python3 (CVE-2024-8088)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 795f2597a4be988e2bb19b69ff9958e981cb894e is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (207871). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Programming Language Software

Vendor

• Python

Name

• CPython

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13.0

License

• open-source

Website

• Product: https://github.com/python/cpython/

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

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