==========================================================================
Ubuntu Security Notice USN-6280-1
August 10, 2023

pypdf2 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

PyPDF2 could be made to crash if it opened a specially crafted
file.

Software Description:
- pypdf2: Pure-Python library built as a PDF toolkit (Python 3)

Details:

It was discovered that PyPDF2 incorrectly handled PDF files with certain
markers. If a user or automated system were tricked into processing a
specially crafted file, an attacker could possibly use this issue to
consume system resources, resulting in a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
   python3-pypdf2                  1.26.0-4ubuntu0.22.04.2

Ubuntu 20.04 LTS:
   python-pypdf2                   1.26.0-3ubuntu1.20.04.2
   python3-pypdf2                  1.26.0-3ubuntu1.20.04.2

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   python-pypdf2                   1.26.0-2ubuntu0.1~esm2
   python3-pypdf2                  1.26.0-2ubuntu0.1~esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   python-pypdf2                   1.25.1-1ubuntu0.1~esm2
   python3-pypdf2                  1.25.1-1ubuntu0.1~esm2

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6280-1
   CVE-2023-36810

Package Information:
   https://launchpad.net/ubuntu/+source/pypdf2/1.26.0-4ubuntu0.22.04.2
   https://launchpad.net/ubuntu/+source/pypdf2/1.26.0-3ubuntu1.20.04.2