CVSS 3.1 Score 10.0 of 10 (high)


Published Mar 29, 2024
Updated: Apr 1, 2024
CWE ID 506


CVE-2024-3094 is a cyber vulnerability that affects the xz compression utility, starting with version 5.6.0. Malicious code was discovered in the upstream tarballs of xz, where a disguised test file existing in the source code is 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 it, allowing for interception and modification of data interaction with this library. The vulnerability has a base severity rating of CRITICAL and an exploitability score of 3.9 out of 10. It poses a high risk to organizations, with potential impacts on integrity and confidentiality, as well as availability of affected systems. Remediation should involve updating to a secure version of xz and ensuring all software linked against the liblzma library is also updated.

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