Bug 1216772 (CVE-2023-36807) - VUL-0: CVE-2023-36807: pypdf: In version 2.10.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop.
Summary: VUL-0: CVE-2023-36807: pypdf: In version 2.10.5 an attacker who uses this vul...
Status: NEW
Alias: CVE-2023-36807
Product: openSUSE Distribution
Classification: openSUSE
Component: Python (show other bugs)
Version: Leap 15.6
Hardware: Other Other
: P3 - Medium : Normal (vote)
Target Milestone: ---
Assignee: Simon Lees
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/371003/
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Depends on:
Blocks:
 
Reported: 2023-11-01 05:34 UTC by SMASH SMASH
Modified: 2023-11-01 06:15 UTC (History)
1 user (show)

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Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2023-11-01 05:34:09 UTC 
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:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-36807