QID 379582

Date Published: 2024-04-08

QID 379582: XZ Utils SSH Backdoor Versions Detected for MacOS

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 Software:
xz (xz-utils) versions 5.6.0, 5.6.1

QID Detection Logic (Authenticated):(MacOS)
The QID checks for the presence of xz, xz-utils version 5.6.0 and 5.6.1 on MacOS

The malicious code may allow unauthorized access to affected systems.

CVSS V3 rated as Critical - 10 severity.

CVSS V2 rated as Critical - 10 severity.

Solution

Vendors are suggesting to downgrade to 5.4.x. Refer to Red Hat Blog for more details.

Vendor References

XZ Backdoor - www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users

CVEs related to QID 379582

CVE-2024-3094 |

Software Advisories

Advisory ID	Software	Component	Link

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].