CPython: CVE-2024-8088: Infinite loop when iterating over zip archive entry names

[Alan Coopersmith <alan.coopersmith () oracle com>]

-------- Forwarded Message --------
Subject: 	[Security-announce][CVE-2024-8088] Infinite loop when iterating over 
zip archive entry names
Date:   Thu, 22 Aug 2024 13:40:20 -0500
From:   Seth Larson <seth () python org>
Reply-To:       security-sig () python org
To:     security-announce () python org



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.

Please see the linked CVE ID for the latest information on affected versions:

* https://www.cve.org/CVERecord?id=CVE-2024-8088
* https://github.com/python/cpython/pull/122906
* https://github.com/python/cpython/issues/122905