CVE-2024-3094
CRITICAL10.0EPSS 85.1%Published: 3/29/2024Modified: 4/28/2026
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.
Affected packages (3)
- Alpine/lighttpdfrom 0, < 1.4.76-r0
- Alpine/xzfrom 0, < 5.6.1-r2
- Debian/xz-utilsfrom 0, < 5.6.1+really5.4.5-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |