Debian DLA-3039-1 : pypdf2 - LTS security update

medium Nessus Plugin ID 161806

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-3039 advisory.

- 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.
(CVE-2022-24859)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the pypdf2 packages.

For Debian 9 stretch, this problem has been fixed in version 1.26.0-2+deb9u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009879

https://security-tracker.debian.org/tracker/source-package/pypdf2

https://www.debian.org/lts/security/2022/dla-3039

https://security-tracker.debian.org/tracker/CVE-2022-24859

https://packages.debian.org/source/stretch/pypdf2

Plugin Details

Severity: Medium

ID: 161806

File Name: debian_DLA-3039.nasl

Version: 1.2

Type: local

Agent: unix

Published: 6/3/2022

Updated: 6/3/2022

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2022-24859

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-pypdf2, p-cpe:/a:debian:debian_linux:python3-pypdf2, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 6/3/2022

Vulnerability Publication Date: 4/18/2022

Reference Information

CVE: CVE-2022-24859