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CVE-2023-36810

Published: Jun 30, 2023

Modified: Feb 13, 2025

PUBLISHED

CVSS v3.1

6.2

MEDIUM

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.

Vendor	Product	Versions
py-pdf	pypdf	affected `< 1.27.9`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw

x_refsource_CONFIRM

https://github.com/py-pdf/pypdf/issues/582

x_refsource_MISC

https://github.com/py-pdf/pypdf/pull/808

x_refsource_MISC

https://lists.debian.org/debian-lts-announce/2023/07/msg00019.html

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