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CVE-2023-36464

Infinite Loop when a comment isn't followed by a character in pypdf

Published: Jun 27, 2023Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-835
NVD MITRE
6.2CVSSMEDIUM
EPSS Score
0.3%
Top 74.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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"")`.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-835

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
PyPDFСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
PyPDF2Matthew Peveler
Library
OSS Libraries
pypdfpy-pdf
On-prem
OSS Libraries / pypi
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
matthew pevelerOSS Librariesaka pypdf2
py-pdfpackage-ecosystemOSS Librariesaka pypdf, pypdf2
and 4 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/py-pdf/pypdf/commit/b0e5c689df689ab173df84dacd77b6fc3c161932
github.com
https://github.com/py-pdf/pypdf/pull/1828
github.com
https://github.com/py-pdf/pypdf/pull/969
github.com
and 12 more references View all →

Timeline

Published
Jun 27, 2023
Last Updated
Nov 21, 2024

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