Bug 2218075 (CVE-2023-36464) - CVE-2023-36464 pypdf: Possible Infinite Loop when a comment isn't followed by a character
Summary: CVE-2023-36464 pypdf: Possible Infinite Loop when a comment isn't followed by...
Keywords:
Status: NEW
Alias: CVE-2023-36464
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2218077
Blocks: 2218078
TreeView+ depends on / blocked
 
Reported: 2023-06-28 04:53 UTC by Avinash Hanwate
Modified: 2023-07-07 08:31 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: ---
Doc Text:
A flaw was found in the pyPDF package. In affected versions of the pyPDF package, this flaw allows an attacker to craft a PDF, which leads to an infinite loop if `__parse_content_stream` is executed.
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description Avinash Hanwate 2023-06-28 04:53:48 UTC
pypdf is an open source, pure-python PDF library. In affected versions an attacker may craft a PDF which leads to an infinite loop if `__parse_content_stream` is executed. That is, for example, the case if the user extracted text from such a PDF. This issue was introduced in pull request #969 and resolved in pull request #1828. Users are advised to upgrade. Users unable to upgrade may modify the line `while peek not in (b"\r", b"\n")` in `pypdf/generic/_data_structures.py` to `while peek not in (b"\r", b"\n", b"")`.

https://github.com/py-pdf/pypdf/pull/969
https://github.com/py-pdf/pypdf/pull/1828
https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8

Comment 2 Avinash Hanwate 2023-06-28 04:55:56 UTC
Created python-PyPDF2 tracking bugs for this issue:

Affects: fedora-all [bug 2218077]


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