CVE-2023-36810

Advisory

Pypdf2 1.27.9 includes a fix for CVE-2023-36810: An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage.
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw

Affected package

Affected versions

Fixed versions

Vulnerability changelog

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. This issue has been addressed in PR 808 and versions from 1.27.9 include this fix. Users are advised to upgrade. There are no known workarounds for this vulnerability. See CVE-2023-36810.


MISC:https://github.com/py-pdf/pypdf/issues/582: https://github.com/py-pdf/pypdf/issues/582
MISC:https://github.com/py-pdf/pypdf/pull/808: https://github.com/py-pdf/pypdf/pull/808
MISC:https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw: https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw

Resources

• https://github.com/py-pdf/pypdf/issues/582
• https://github.com/py-pdf/pypdf/pull/808
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-36810