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CVE-2022-24859

6.2 · MEDIUM

PyPDF2 is an open source python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files.

Published Apr 18, 2022CWE-835EPSS 1.32%

Overview

CVE-2022-24859 is a medium-severity vulnerability. It was published on April 18, 2022 and has a CVSS 3.1 base score of 6.2 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/py-pdf/PyPDF2/issues/329GitHubgithub.com/py-pdf/PyPDF2/pull/740GitHubgithub.com/py-pdf/PyPDF2/releases/tag/1.27.5GitHubgithub.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79Reflists.debian.org/debian-lts-announce/2022/06/msg00001.htmlReflists.debian.org/debian-lts-announce/2023/06/msg00013.htmlGitHubgithub.com/py-pdf/PyPDF2/issues/329GitHubgithub.com/py-pdf/PyPDF2/pull/740GitHubgithub.com/py-pdf/PyPDF2/releases/tag/1.27.5GitHubgithub.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79

How CyberStrike helps

Frequently asked questions

What is CVE-2022-24859?

CVE-2022-24859 is a medium-severity vulnerability. It was published on April 18, 2022 and has a CVSS 3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2022-24859?

This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-24859?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-24859?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-24859 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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