CVE Vulnerability

CVE-2022-24859

PyPDF2 is an open source python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In versions prior to 1.27.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if the PyPDF2 if the code attempts to get the content stream. The reason is that the last while-loop in `ContentStream._readInlineImage` only terminates when it finds the `EI` token, but never actually checks if the stream has already ended. This issue has been resolved in version `1.27.5`. Users unable to upgrade should validate and PDFs prior to iterating over their content stream.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79 Exploit Third Party Advisory
https://github.com/py-pdf/PyPDF2/pull/740 Patch Third Party Advisory
https://github.com/py-pdf/PyPDF2/issues/329 Exploit Third Party Advisory
https://github.com/py-pdf/PyPDF2/releases/tag/1.27.5 Release Notes Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00001.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:pypdf2_project:pypdf2:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Information

Published : 2022-04-18 07:15

Updated : 2022-06-15 03:02

NVD link : CVE-2022-24859

Mitre link : CVE-2022-24859

Products Affected
No products.
CWE
CWE-835