CVE-2022-24859

 

Published at: - 18-04-2022 09:15

Last modified: - 15-06-2022 05:02

Total changes: - 5

Description

PyPDF2 is an open source python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In versions prior to 1.27.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if the PyPDF2 if the code attempts to get the content stream. The reason is that the last while-loop in `ContentStream._readInlineImage` only terminates when it finds the `EI` token, but never actually checks if the stream has already ended. This issue has been resolved in version `1.27.5`. Users unable to upgrade should validate and PDFs prior to iterating over their content stream.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79
• https://github.com/py-pdf/PyPDF2/pull/740
• https://github.com/py-pdf/PyPDF2/issues/329
• https://github.com/py-pdf/PyPDF2/releases/tag/1.27.5
• [debian-lts-announce] 20220603 [SECURITY] [DLA 3039-1] pypdf2 security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2022-24859

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures