CVE-2023-36807
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-36807
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-36807.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-36807
- Aliases
- Downstream
- Published
- 2023-06-30T18:38:10Z
- Modified
- 2025-11-04T19:32:00Z
- Severity
-
- 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Infinite Loop when reading malformed objects in pypdf
- Details
-
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_objectto an an error throwing case. See GHSA-hm9v-vj3r-r55m for details. - Database specific
{ "cwe_ids": [ "CWE-835" ] }- References