CVE-2023-36807

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In version 2.10.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the user extracted metadata from such a malformed PDF. Versions prior to 2.10.5 throw an error, but do not hang forever. This issue was fixed with https://github.com/py-pdf/pypdf/pull/1331 which has been included in release 2.10.6. Users are advised to upgrade. Users unable to upgrade should modify `PyPDF2/generic/_data_structures.py::read_object` to an an error throwing case. See GHSA-hm9v-vj3r-r55m for details.
References
Link Resource
https://github.com/py-pdf/pypdf/issues/1329 Exploit Issue Tracking Vendor Advisory
https://github.com/py-pdf/pypdf/pull/1331 Patch
https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m Exploit Mitigation Patch Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:pypdf_project:pypdf:2.10.5:*:*:*:*:*:*:*

History

10 Jul 2023, 16:32

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 6.5
First Time Pypdf Project
Pypdf Project pypdf
References (MISC) https://github.com/py-pdf/pypdf/issues/1329 - (MISC) https://github.com/py-pdf/pypdf/issues/1329 - Exploit, Issue Tracking, Vendor Advisory
References (MISC) https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m - (MISC) https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m - Exploit, Mitigation, Patch, Vendor Advisory
References (MISC) https://github.com/py-pdf/pypdf/pull/1331 - (MISC) https://github.com/py-pdf/pypdf/pull/1331 - Patch
CPE cpe:2.3:a:pypdf_project:pypdf:2.10.5:*:*:*:*:*:*:*

30 Jun 2023, 19:15

Type Values Removed Values Added
New CVE

Information

Published : 2023-06-30 19:15

Updated : 2024-02-28 20:13


NVD link : CVE-2023-36807

Mitre link : CVE-2023-36807

CVE.ORG link : CVE-2023-36807


JSON object : View

Products Affected

pypdf_project

  • pypdf
CWE
CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')