CVE-2024-3094 is a critical severity vulnerability with a CVSS score of 10.0. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.
Very high probability of exploitation in the next 30 days
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0. The tarballs included extra .m4 files, which contained instructions for building with automake that did not exist in the repository. These instructions, through a series of complex obfuscations, extract a prebuilt object file from one of the test archives, which is then used to modify specific functions in the code while building the liblzma package. This issue results in liblzma being used by additional software, like sshd, to provide functionality that will be interpreted by the modified functions.
| Vendor | Product |
|---|---|
| Tukaani | Xz |
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