Arch Linux alert ASA-202012-2 (cimg)

From:
             
 
Remi Gacogne <rgacogne@archlinux.org>
To:
             
 
arch-security@archlinux.org
Subject:
             
 
[ASA-202012-2] cimg: arbitrary code execution
Date:
             
 
Wed, 09 Dec 2020 19:49:40 +0100
Message-ID:
             
 
<bec6a7ec-c45c-56ba-8e83-2bb3cf325813@archlinux.org>
Arch Linux Security Advisory ASA-202012-2
=========================================

Severity: Medium
Date    : 2020-12-05
CVE-ID  : CVE-2020-25693
Package : cimg
Type    : arbitrary code execution
Remote  : No
Link    : https://security.archlinux.org/AVG-1318

Summary
=======

The package cimg before version 2.9.4-1 is vulnerable to arbitrary code
execution.

Resolution
==========

Upgrade to 2.9.4-1.

# pacman -Syu "cimg>=2.9.4-1"

The problem has been fixed upstream in version 2.9.4.

Workaround
==========

None.

Description
===========

A flaw was found in CImg in versions prior to 2.9.3. Integer overflows
leading to heap buffer overflows in load_pnm() can be triggered by a
specially crafted input file processed by CImg, which can lead to an
impact to application availability or data integrity.

Impact
======

An attacker might be able to execute arbitrary code via a crafted PNM
file.

References
==========

https://github.com/dtschump/CImg/pull/295
https://github.com/dtschump/CImg/commit/7db6d08355d09414d...
https://security.archlinux.org/CVE-2020-25693