GHSA-wjcc-cq79-p63fMediumCVSS 5.1

Possible Infinite Loop when PdfWriter(clone_from) is used with a PDF

Published
October 31, 2023
Last Modified
January 8, 2024

🔗 CVE IDs covered (1)

CVE-2023-46250 →

📋 Description

Impact

An attacker who uses this vulnerability 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.

Patches

The issue was fixed with #2264

Workarounds

If you cannot update your version of pypdf, you should modify pypdf/generic/_data_structures.py just like #2264 did.

🎯 Affected products1

  • pip/pypdf:>= 3.7.0, < 3.17.0

🔗 References (5)