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
History
10 Jul 2023, 16:32
Type | Values Removed | Values Added |
---|---|---|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
First Time |
Pypdf Project
Pypdf Project pypdf |
|
References | (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 - Exploit, Mitigation, Patch, Vendor Advisory | |
References | (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')