CVE-2023-36807

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Summary

CVECVE-2023-36807
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-06-30 19:15:00 UTC
Updated2023-07-10 16:32:00 UTC
Descriptionpypdf 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.

Risk And Classification

Problem Types: CWE-835

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Pypdf Project Pypdf 2.10.5 All All All

References

ReferenceSourceLinkTags
ROB: Fix infinite loop due to Invalid object by pubpub-zz · Pull Request #1331 · py-pdf/pypdf · GitHub MISC github.com
Possible Infinite Loop when reading malformed objects · Advisory · py-pdf/pypdf · GitHub MISC github.com
Infinite loop while reading metadata · Issue #1329 · py-pdf/pypdf · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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