Backdoor Xz Utils Linux Open Source
Infosecurity Magazine covers the XZ Utils open-source backdoor, a malicious implant in liblzma that targeted OpenSSH on major Linux distributions.
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Vulnerability3 · 1 read
CVE-2024-3094
- CVSS 3.1
- 10.0 critical
- EPSS
- 86%p100
- Published
- ·
- Modified
Description · NVD
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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