CVE-2023-36810

Description

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.

How to fix CVE-2023-36810

To remediate CVE-2023-36810, upgrade the affected package to a fixed version below.

• —upgrade to 1.26.0-4+deb11u1 or later
• —upgrade to 1.26.0-2+deb10u2 or later
• —upgrade to 1.27.9 or later

Is CVE-2023-36810 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0, < 1.26.0-4+deb11u1
• from 0, < 1.26.0-2+deb10u2
• from 0, < 1.27.9

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-36810
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-36810
• PATCHgithub.com/py-pdf/pypdf
• WEBgithub.com/py-pdf/pypdf/commit/c6c56f550bb384e05f0139c796ba1308837d6373
• WEB