CVE-2024-3094

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.

How to fix CVE-2024-3094

To remediate CVE-2024-3094, upgrade the affected package to a fixed version below.

• —upgrade to 1.4.76-r0 or later
• —upgrade to 5.6.1-r2 or later
• —upgrade to 5.6.1+really5.4.5-1 or later

Is CVE-2024-3094 being exploited?

Likely — EPSS is 85.1%, placing CVE-2024-3094 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.

Affected packages (3)

• from 0, < 1.4.76-r0
• from 0, < 5.6.1-r2
• from 0, < 5.6.1+really5.4.5-1

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2024-3094
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2024-3094