Vulnerability Description
PyPDF2 is an open source python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In versions prior to 1.27.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if the PyPDF2 if the code attempts to get the content stream. The reason is that the last while-loop in `ContentStream._readInlineImage` only terminates when it finds the `EI` token, but never actually checks if the stream has already ended. This issue has been resolved in version `1.27.5`. Users unable to upgrade should validate and PDFs prior to iterating over their content stream.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pypdf2 Project | Pypdf2 | < 1.27.5 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/PyPDF2/issues/329ExploitThird Party Advisory
- https://github.com/py-pdf/PyPDF2/pull/740PatchThird Party Advisory
- https://github.com/py-pdf/PyPDF2/releases/tag/1.27.5Release NotesThird Party Advisory
- https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/06/msg00001.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00013.html
- https://github.com/py-pdf/PyPDF2/issues/329ExploitThird Party Advisory
- https://github.com/py-pdf/PyPDF2/pull/740PatchThird Party Advisory
- https://github.com/py-pdf/PyPDF2/releases/tag/1.27.5Release NotesThird Party Advisory
- https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/06/msg00001.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00013.html
FAQ
What is CVE-2022-24859?
CVE-2022-24859 is a vulnerability with a CVSS score of 6.2 (MEDIUM). PyPDF2 is an open source python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In versions prior to 1.27.5 an attacker who uses this vulnerability can cr...
How severe is CVE-2022-24859?
CVE-2022-24859 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-24859?
Check the references section above for vendor advisories and patch information. Affected products include: Pypdf2 Project Pypdf2, Debian Debian Linux.