CVE-2024-3094

CRITICAL

10.0

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.

CVE Details

CVSS v3.1 Score10.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/29/2024

Last Modified8/19/2025

Sourcenvd

Honeypot Sightings0

Affected Products

tukaani:xz

Weaknesses (CWE)

CWE-506

References

https://access.redhat.com/security/cve/CVE-2024-3094(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2272210(secalert@redhat.com)

https://www.openwall.com/lists/oss-security/2024/03/29/4(secalert@redhat.com)

https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users(secalert@redhat.com)

http://www.openwall.com/lists/oss-security/2024/03/29/10(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/29/12(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/29/4(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/29/5(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/29/8(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/30/12(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/30/27(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/30/36(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/03/30/5(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2024/04/16/5(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/security/cve/CVE-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://ariadne.space/2024/04/02/the-xz-utils-backdoor-is-a-symptom-of-a-larger-problem/(af854a3a-2127-422b-91ae-364da2661108)

https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/(af854a3a-2127-422b-91ae-364da2661108)

https://aws.amazon.com/security/security-bulletins/AWS-2024-002/(af854a3a-2127-422b-91ae-364da2661108)

https://blog.netbsd.org/tnf/entry/statement_on_backdoor_in_xz(af854a3a-2127-422b-91ae-364da2661108)

https://boehs.org/node/everything-i-know-about-the-xz-backdoor(af854a3a-2127-422b-91ae-364da2661108)

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024(af854a3a-2127-422b-91ae-364da2661108)

https://bugs.gentoo.org/928134(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=2272210(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.suse.com/show_bug.cgi?id=1222124(af854a3a-2127-422b-91ae-364da2661108)

https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405(af854a3a-2127-422b-91ae-364da2661108)

https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/advisories/GHSA-rxwq-x6h5-x525(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/amlweems/xzbot(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/karcherm/xz-malware(af854a3a-2127-422b-91ae-364da2661108)

https://gynvael.coldwind.pl/?lang=en&id=782(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-security-announce/2024/msg00057.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html(af854a3a-2127-422b-91ae-364da2661108)

https://lwn.net/Articles/967180/(af854a3a-2127-422b-91ae-364da2661108)

https://news.ycombinator.com/item?id=39865810(af854a3a-2127-422b-91ae-364da2661108)

https://news.ycombinator.com/item?id=39877267(af854a3a-2127-422b-91ae-364da2661108)

https://news.ycombinator.com/item?id=39895344(af854a3a-2127-422b-91ae-364da2661108)

https://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/(af854a3a-2127-422b-91ae-364da2661108)

https://research.swtch.com/xz-script(af854a3a-2127-422b-91ae-364da2661108)

https://research.swtch.com/xz-timeline(af854a3a-2127-422b-91ae-364da2661108)

https://security-tracker.debian.org/tracker/CVE-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://security.alpinelinux.org/vuln/CVE-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://security.archlinux.org/CVE-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20240402-0001/(af854a3a-2127-422b-91ae-364da2661108)

https://tukaani.org/xz-backdoor/(af854a3a-2127-422b-91ae-364da2661108)

https://twitter.com/LetsDefendIO/status/1774804387417751958(af854a3a-2127-422b-91ae-364da2661108)

https://twitter.com/debian/status/1774219194638409898(af854a3a-2127-422b-91ae-364da2661108)

https://twitter.com/infosecb/status/1774595540233167206(af854a3a-2127-422b-91ae-364da2661108)

https://twitter.com/infosecb/status/1774597228864139400(af854a3a-2127-422b-91ae-364da2661108)

https://ubuntu.com/security/CVE-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://www.binarly.io/blog/persistent-risk-xz-utils-backdoor-still-lurking-in-docker-images(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils(af854a3a-2127-422b-91ae-364da2661108)

https://www.kali.org/blog/about-the-xz-backdoor/(af854a3a-2127-422b-91ae-364da2661108)

https://www.openwall.com/lists/oss-security/2024/03/29/4(af854a3a-2127-422b-91ae-364da2661108)

https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users(af854a3a-2127-422b-91ae-364da2661108)

https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils(af854a3a-2127-422b-91ae-364da2661108)

https://www.theregister.com/2024/03/29/malicious_backdoor_xz/(af854a3a-2127-422b-91ae-364da2661108)

https://www.vicarius.io/vsociety/vulnerabilities/cve-2024-3094(af854a3a-2127-422b-91ae-364da2661108)

https://xeiaso.net/notes/2024/xz-vuln/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.