harekrishnarai/xz-utils-vuln-checker

Checker for CVE-2024-3094 where malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0. Through a series of complex obfuscations, the liblzma build process extracts a prebuilt object file from a disguised test file existing in the source code, which is then used to modify specific functions in the liblzma code.

   _  __ ____         __  __  / /_   (_)   / /   _____
  | |/_//_  / ______ / / / / / __/  / /   / /   / ___/
 _>  <   / /_/_____// /_/ / / /_   / /   / /   (__  ) 
/_/|_|  /___/       \__,_/  \__/  /_/   /_/   /____/  
                                                      
							Hare Krishna Rai (0xblurr3d)               
 _   __  __  __   / /   ____          _____   / /_   ___   _____   / /__  ___    _____
| | / / / / / /  / /   / __ \ ______ / ___/  / __ \ / _ \ / ___/  / //_/ / _ \  / ___/
| |/ / / /_/ /  / /   / / / //_____// /__   / / / //  __// /__   / ,<   /  __/ / /    
|___/  \__,_/  /_/   /_/ /_/        \___/  /_/ /_/ \___/ \___/  /_/|_|  \___/ /_/     
(CVE-2024-3094)                                                                          

[+] Initiating vulnerability check...
[+] Detecting package manager...
[+] Getting xz-utils version...
[+] Checking xz-utils version for vulnerabilities...

CVE-2024-3094

Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0. Through a series of complex obfuscations, the liblzma build process extracts a prebuilt object file from a disguised test file existing in the source code, which is then used to modify specific functions in the liblzma code. This results in a modified liblzma library that can be used by any software linked against this library, intercepting and modifying the data interaction with this library.

References for CVE-2024-3094

Resource	URL
Red Hat	Link
Ars Technica	Link
AWS	Link
Dark Reading	Link
Tenable Blog	Link

Prerequisites

You need to have a bash shell to run this script. This is typically available on most Unix-like operating systems, including Linux and Mac OS X.

Installing

To use this script, you can simply download it and give it execute permissions:

git clone https://github.com/harekrishnarai/xz-utils-vuln-checker

cd xz-utils-vuln-checker
chmod +x xz-utils-vuln-checker.sh
./xz-utils-vuln-checker.sh

The available options are:
-s, --summary       Display a short summary about CVE-2024-3094
-h, --help: Display the help message