CVE-2024-3094: xz — Fix

Description

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.

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CVSS v3.1 Score

10.0

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-506 CWE-506

Affected Products

Vendor	Product	Versions
tukaani	xz	All
tukaani	xz	All

References

Advisories & Patches

https://access.redhat.com/security/cve/CVE-2024-3094 https://bugzilla.redhat.com/show_bug.cgi?id=2272210 https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users https://access.redhat.com/security/cve/CVE-2024-3094 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024 https://bugzilla.redhat.com/show_bug.cgi?id=2272210 https://tukaani.org/xz-backdoor/ https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users

Other References

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2024-3094? +

CVE-2024-3094 has a CVSS v3.1 score of 10.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-3094? +

CVE-2024-3094 affects products from tukaani, specifically: xz. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-3094? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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