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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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.
Metrics
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https://ubuntu.com/security/CVE-2024-3094 Types: Third Party Advisory
Removed
Reference Type
https://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094 Types: Third Party Advisory, US Government Resource
Removed
Reference Type
https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils Types: Third Party Advisory
Removed
Reference Type
https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils Types: Third Party Advisory
https://ubuntu.com/security/CVE-2024-3094 No Types Assigned
https://ubuntu.com/security/CVE-2024-3094 Third Party Advisory
Changed
Reference Type
https://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094 No Types Assigned
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
Changed
Reference Type
https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils No Types Assigned
https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils Third Party Advisory
Changed
Reference Type
https://www.openwall.com/lists/oss-security/2024/03/29/4 No Types Assigned
https://www.openwall.com/lists/oss-security/2024/03/29/4 Mailing List
Changed
Reference Type
https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users No Types Assigned
https://xeiaso.net/notes/2024/xz-vuln/ No Types Assigned
https://xeiaso.net/notes/2024/xz-vuln/ Third Party Advisory
CVE Modified by Red Hat, Inc.4/01/2024 1:15:47 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://twitter.com/LetsDefendIO/status/1774804387417751958 [No types assigned]
CVE Modified by Red Hat, Inc.4/01/2024 1:15:08 AM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://boehs.org/node/everything-i-know-about-the-xz-backdoor [No types assigned]
Added
Reference
Red Hat, Inc. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024 [No types assigned]
Added
Reference
Red Hat, Inc. https://bugs.gentoo.org/928134 [No types assigned]
Added
Reference
Red Hat, Inc. https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405 [No types assigned]
Added
Reference
Red Hat, Inc. https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27 [No types assigned]
Added
Reference
Red Hat, Inc. https://github.com/advisories/GHSA-rxwq-x6h5-x525 [No types assigned]
Added
Reference
Red Hat, Inc. https://github.com/karcherm/xz-malware [No types assigned]
Added
Reference
Red Hat, Inc. https://lists.debian.org/debian-security-announce/2024/msg00057.html [No types assigned]
Added
Reference
Red Hat, Inc. https://lwn.net/Articles/967180/ [No types assigned]
Added
Reference
Red Hat, Inc. https://tukaani.org/xz-backdoor/ [No types assigned]
Added
Reference
Red Hat, Inc. https://twitter.com/debian/status/1774219194638409898 [No types assigned]
Added
Reference
Red Hat, Inc. https://twitter.com/infosecb/status/1774595540233167206 [No types assigned]
Added
Reference
Red Hat, Inc. https://twitter.com/infosecb/status/1774597228864139400 [No types assigned]
Added
Reference
Red Hat, Inc. https://ubuntu.com/security/CVE-2024-3094 [No types assigned]
Added
Reference
Red Hat, Inc. https://xeiaso.net/notes/2024/xz-vuln/ [No types assigned]
CVE Modified by Red Hat, Inc.3/30/2024 9:15:47 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://gynvael.coldwind.pl/?lang=en&id=782 [No types assigned]
Added
Reference
Red Hat, Inc. https://news.ycombinator.com/item?id=39877267 [No types assigned]
CVE Modified by Red Hat, Inc.3/30/2024 4:15:53 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html [No types assigned]
CVE Modified by Red Hat, Inc.3/30/2024 7:15:50 AM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/ [No types assigned]
Added
Reference
Red Hat, Inc. https://aws.amazon.com/security/security-bulletins/AWS-2024-002/ [No types assigned]
Added
Reference
Red Hat, Inc. https://bugzilla.suse.com/show_bug.cgi?id=1222124 [No types assigned]
Added
Reference
Red Hat, Inc. https://news.ycombinator.com/item?id=39865810 [No types assigned]
Added
Reference
Red Hat, Inc. https://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/ [No types assigned]
Added
Reference
Red Hat, Inc. https://security-tracker.debian.org/tracker/CVE-2024-3094 [No types assigned]
Added
Reference
Red Hat, Inc. https://security.alpinelinux.org/vuln/CVE-2024-3094 [No types assigned]
Added
Reference
Red Hat, Inc. https://security.archlinux.org/CVE-2024-3094 [No types assigned]
Added
Reference
Red Hat, Inc. https://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094 [No types assigned]
Added
Reference
Red Hat, Inc. https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils [No types assigned]
Added
Reference
Red Hat, Inc. https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils [No types assigned]
Added
Reference
Red Hat, Inc. https://www.theregister.com/2024/03/29/malicious_backdoor_xz/ [No types assigned]
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 s
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.
New CVE Received from Red Hat, Inc.3/29/2024 1:15:21 PM
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 s
Added
CVSS V3.1
Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Added
CWE
Red Hat, Inc. CWE-506
Added
Reference
Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2024-3094 [No types assigned]
Added
Reference
Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2272210 [No types assigned]
Added
Reference
Red Hat, Inc. https://www.openwall.com/lists/oss-security/2024/03/29/4 [No types assigned]
Added
Reference
Red Hat, Inc. https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2024-3094 NVD
Published Date: 03/29/2024 NVD
Last Modified: 02/06/2025
Source: Red Hat, Inc.