Bug 1216774 (CVE-2023-46250)

Summary:	VUL-0: CVE-2023-46250: pypdf: infinite loop condition may be triggered to cause denial of service
Product:	[openSUSE] openSUSE Distribution	Reporter:	SMASH SMASH <smash_bz>
Component:	Python	Assignee:	Simon Lees <simonf.lees>
Status:	NEW ---	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	stoyan.manolov
Version:	Leap 15.6
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/383718/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2023-11-01 05:36:06 UTC

pypdf is a free and open-source pure-python PDF library. An attacker who uses a
vulnerability present in versions 3.7.0 through 3.16.4 can craft a PDF which
leads to an infinite loop. This infinite loop blocks the current process and can
utilize a single core of the CPU by 100%. It does not affect memory usage. That
is, for example, the case when the pypdf-user manipulates an incoming malicious
PDF e.g. by merging it with another PDF or by adding annotations. The issue was
fixed in version 3.17.0. As a workaround, apply the patch manually by modifying
`pypdf/generic/_data_structures.py`.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-46250