Inefficient algorithmic complexity in PyPDF - CVE-2023-36810
Published: August 14, 2023
Vulnerability identifier: #VU79470
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-36810
CWE-ID: CWE-407
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to inefficient algorithmic complexity when parsing PDF files, which can lean to an unexpected long runtime. A remote attacker can pass a specially crafted PDF file to the application and consume all available CPU resources.
Affected software
PyPDF
Ubuntu
python3-pypdf2 (Ubuntu package)
python-pypdf2 (Ubuntu package)
Ubuntu
python3-pypdf2 (Ubuntu package)
python-pypdf2 (Ubuntu package)
How to mitigate CVE-2023-36810
Install updates from vendor's website.
PyPDF - update to 1.27.9
python3-pypdf2 (Ubuntu package) - addressed in versions Ubuntu Pro, 1.26.0-3ubuntu1.20.04.2, 1.26.0-4ubuntu0.22.04.2
python-pypdf2 (Ubuntu package) - addressed in versions Ubuntu Pro, 1.26.0-3ubuntu1.20.04.2
python3-pypdf2 (Ubuntu package) - addressed in versions Ubuntu Pro, 1.26.0-3ubuntu1.20.04.2, 1.26.0-4ubuntu0.22.04.2
python-pypdf2 (Ubuntu package) - addressed in versions Ubuntu Pro, 1.26.0-3ubuntu1.20.04.2