CVEvulnerability
CVE-2024-3094
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2024-03-29
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-506
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.
Affected configurations
• tukaani xz 5.6.0
• tukaani xz 5.6.1
Related
Weakness · CWE (1)
- CWE-506 Embedded Malicious Code weakness
References
- https://access.redhat.com/security/cve/CVE-2024-3094 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2272210 Issue Tracking, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2024/03/29/4 Mailing List
- https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users Vendor Advisory
- http://www.openwall.com/lists/oss-security/2024/03/29/10 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/29/12 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/29/4 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/29/5 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/29/8 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/30/12 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/30/27 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/30/36 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/03/30/5 www.openwall.com
- http://www.openwall.com/lists/oss-security/2024/04/16/5 www.openwall.com
- https://access.redhat.com/security/cve/CVE-2024-3094 Vendor Advisory
- https://ariadne.space/2024/04/02/the-xz-utils-backdoor-is-a-symptom-of-a-larger-problem/ ariadne.space
- https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/ Third Party Advisory
- https://aws.amazon.com/security/security-bulletins/AWS-2024-002/ Third Party Advisory
- https://blog.netbsd.org/tnf/entry/statement_on_backdoor_in_xz blog.netbsd.org
- https://boehs.org/node/everything-i-know-about-the-xz-backdoor Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024 Mailing List, Vendor Advisory
- https://bugs.gentoo.org/928134 Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2272210 Issue Tracking, Vendor Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1222124 Issue Tracking, Third Party Advisory
- https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405 Third Party Advisory
- https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27 Third Party Advisory
- https://github.com/advisories/GHSA-rxwq-x6h5-x525 Third Party Advisory
- https://github.com/amlweems/xzbot github.com
- https://github.com/karcherm/xz-malware Third Party Advisory
- https://gynvael.coldwind.pl/?lang=en&id=782 Technical Description, Third Party Advisory
- https://lists.debian.org/debian-security-announce/2024/msg00057.html Mailing List, Third Party Advisory
- https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html Third Party Advisory
- https://lwn.net/Articles/967180/ Issue Tracking, Third Party Advisory
- https://news.ycombinator.com/item?id=39865810 Issue Tracking, Third Party Advisory
- https://news.ycombinator.com/item?id=39877267 Issue Tracking
- https://news.ycombinator.com/item?id=39895344 news.ycombinator.com
- https://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/ Third Party Advisory
- https://research.swtch.com/xz-script research.swtch.com
- https://research.swtch.com/xz-timeline research.swtch.com
- https://security-tracker.debian.org/tracker/CVE-2024-3094 Third Party Advisory
- https://security.alpinelinux.org/vuln/CVE-2024-3094 Third Party Advisory
- https://security.archlinux.org/CVE-2024-3094 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240402-0001/ security.netapp.com
- https://tukaani.org/xz-backdoor/ Issue Tracking, Vendor Advisory
- https://twitter.com/LetsDefendIO/status/1774804387417751958 Third Party Advisory
- https://twitter.com/debian/status/1774219194638409898 Press/Media Coverage
- https://twitter.com/infosecb/status/1774595540233167206 Press/Media Coverage
- https://twitter.com/infosecb/status/1774597228864139400 Press/Media Coverage
- https://ubuntu.com/security/CVE-2024-3094 Third Party Advisory
- https://www.binarly.io/blog/persistent-risk-xz-utils-backdoor-still-lurking-in-docker-images www.binarly.io
- https://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094 Third Party Advisory, US Government Resource
- https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils Third Party Advisory
- https://www.kali.org/blog/about-the-xz-backdoor/ www.kali.org
- https://www.openwall.com/lists/oss-security/2024/03/29/4 Mailing List
- https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users Vendor Advisory
- https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils Third Party Advisory
- https://www.theregister.com/2024/03/29/malicious_backdoor_xz/ Press/Media Coverage
- https://www.vicarius.io/vsociety/vulnerabilities/cve-2024-3094 www.vicarius.io
- https://xeiaso.net/notes/2024/xz-vuln/ Third Party Advisory