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CVE-2023-36810

Quadratic runtime with malformed PDF missing xref marker in pypdf

Published: Jun 30, 2023Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-407
NVD MITRE
6.2CVSSMEDIUM
EPSS Score
0.6%
Top 57.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. This issue has been addressed in PR 808 and versions from 1.27.9 include this fix. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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-407

Affected Products

pypdfpypdf project
Library
OSS Libraries / generic-library
PyPDF2PyPIOSS Libraries
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
PyPDF2Matthew Peveler
Library
OSS Libraries
pypdf projectoss-projectOSS Libraries
pypipackage-ecosystemOSS Libraries
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
matthew pevelerOSS Librariesaka pypdf2
and 2 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/issues/582
github.com
https://github.com/py-pdf/pypdf/pull/808
github.com
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw
github.com
and 13 more references View all →

Timeline

Published
Jun 30, 2023
Last Updated
Nov 21, 2024

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