Bug 918441 (CVE-2023-36464, CVE-2023-46250)

Summary:	<dev-python/pypdf-3.17.0: multiple vulnerabilities
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	minor	CC:	mgorny, python
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:	B3 [glsa?]
Package list:		Runtime testing required:	---
Bug Depends on:	918456
Bug Blocks:

Description John Helmert III archtester

2023-11-25 03:14:16 UTC

CVE-2023-46250 (https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjcc-cq79-p63f):

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`.

CVE-2023-36464 (https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8):

pypdf is an open source, pure-python PDF library. In affected versions an attacker may craft a PDF which leads to an infinite loop if `__parse_content_stream` is executed. That is, for example, the case if the user extracted text from such a PDF. This issue was introduced in pull request #969 and resolved in pull request #1828. Users are advised to upgrade. Users unable to upgrade may modify the line `while peek not in (b"\r", b"\n")` in `pypdf/generic/_data_structures.py` to `while peek not in (b"\r", b"\n", b"")`.

CVE-2023-36464 is fixed in 3.9.0, CVE-2023-46250 is fixed in
3.17.0. Please stabilize >=3.17.0.

Comment 1 Michał Górny archtester

2023-11-25 06:58:20 UTC

cleanup done.