CVE-2024-3094

    Dashboard / Vulnerabilities / CVE-2024-3094

    CVE-2024-3094

    Published: 29 Mar 2024Last Modified: 30 Aug 2026

    Summary: Xz: malicious code in distributed source

    Details: 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.

    References: http://www.openwall.com/lists/oss-security/2024/03/29/10, http://www.openwall.com/lists/oss-security/2024/03/29/12, http://www.openwall.com/lists/oss-security/2024/03/29/4, http://www.openwall.com/lists/oss-security/2024/03/29/5, http://www.openwall.com/lists/oss-security/2024/03/29/8, http://www.openwall.com/lists/oss-security/2024/03/30/12, http://www.openwall.com/lists/oss-security/2024/03/30/27, http://www.openwall.com/lists/oss-security/2024/03/30/36, http://www.openwall.com/lists/oss-security/2024/03/30/5, http://www.openwall.com/lists/oss-security/2024/04/16/5, https://access.redhat.com/downloads/content/package-browser/, https://access.redhat.com/jbossnetwork/restricted/listSoftware.html, https://ariadne.space/2024/04/02/the-xz-utils-backdoor-is-a-symptom-of-a-larger-problem/, https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/, https://aws.amazon.com/security/security-bulletins/AWS-2024-002/, https://boehs.org/node/everything-i-know-about-the-xz-backdoor, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024, https://bugs.gentoo.org/928134, https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405, https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27, https://gynvael.coldwind.pl/?lang=en&id=782, https://lists.debian.org/debian-security-announce/2024/msg00057.html, https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html, https://lwn.net/Articles/967180/, https://news.ycombinator.com/item?id=39865810, https://news.ycombinator.com/item?id=39877267, https://news.ycombinator.com/item?id=39895344, https://research.swtch.com/xz-script, https://research.swtch.com/xz-timeline, https://security-tracker.debian.org/tracker/CVE-2024-3094, https://security.alpinelinux.org/vuln/CVE-2024-3094, https://security.archlinux.org/CVE-2024-3094, https://tukaani.org/xz-backdoor/, https://twitter.com/LetsDefendIO/status/1774804387417751958, https://twitter.com/debian/status/1774219194638409898, https://twitter.com/infosecb/status/1774595540233167206, https://twitter.com/infosecb/status/1774597228864139400, https://ubuntu.com/security/CVE-2024-3094, https://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094, https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils, https://www.openwall.com/lists/oss-security/2024/03/29/4, https://www.theregister.com/2024/03/29/malicious_backdoor_xz/, https://www.vicarius.io/vsociety/vulnerabilities/cve-2024-3094, https://xeiaso.net/notes/2024/xz-vuln/, https://access.redhat.com/security/cve/CVE-2024-3094, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/3xxx/CVE-2024-3094.json, https://github.com/advisories/GHSA-rxwq-x6h5-x525, https://nvd.nist.gov/vuln/detail/CVE-2024-3094, https://security.netapp.com/advisory/ntap-20240402-0001/, https://bugzilla.redhat.com/show_bug.cgi?id=2272210, https://bugzilla.suse.com/show_bug.cgi?id=1222124, https://github.com/amlweems/xzbot, https://github.com/karcherm/xz-malware, https://github.com/tukaani-project/xz, https://blog.netbsd.org/tnf/entry/statement_on_backdoor_in_xz, https://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/, https://www.binarly.io/blog/persistent-risk-xz-utils-backdoor-still-lurking-in-docker-images, https://www.kali.org/blog/about-the-xz-backdoor/, https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users, https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 2d7d862e3ffa8cec4fd3fdffcd84e984a17aa429
    Fixed -None

    Affected versions

    5.6.0
    5.6.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2024-3094 | CVE-DB