CVE-2024-3094 (GCVE-0-2024-3094)
Vulnerability from cvelistv5
Published
2024-03-29 16:51
Modified
2025-08-19 01:03
Severity ?
CWE
  • CWE-506 - Embedded Malicious Code
Summary
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
secalert@redhat.com https://access.redhat.com/security/cve/CVE-2024-3094 Vendor Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2272210 Issue Tracking, Vendor Advisory
secalert@redhat.com https://www.openwall.com/lists/oss-security/2024/03/29/4 Mailing List
secalert@redhat.com https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 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 Vendor Advisory
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/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://aws.amazon.com/security/security-bulletins/AWS-2024-002/ Third Party Advisory
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 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024 Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugs.gentoo.org/928134 Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=2272210 Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.suse.com/show_bug.cgi?id=1222124 Issue Tracking, Third Party Advisory
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 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/advisories/GHSA-rxwq-x6h5-x525 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/amlweems/xzbot
af854a3a-2127-422b-91ae-364da2661108 https://github.com/karcherm/xz-malware Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://gynvael.coldwind.pl/?lang=en&id=782 Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-security-announce/2024/msg00057.html Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lwn.net/Articles/967180/ Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://news.ycombinator.com/item?id=39865810 Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://news.ycombinator.com/item?id=39877267 Issue Tracking
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/ Third Party Advisory
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 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.alpinelinux.org/vuln/CVE-2024-3094 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.archlinux.org/CVE-2024-3094 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20240402-0001/
af854a3a-2127-422b-91ae-364da2661108 https://tukaani.org/xz-backdoor/ Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://twitter.com/LetsDefendIO/status/1774804387417751958 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://twitter.com/debian/status/1774219194638409898 Press/Media Coverage
af854a3a-2127-422b-91ae-364da2661108 https://twitter.com/infosecb/status/1774595540233167206 Press/Media Coverage
af854a3a-2127-422b-91ae-364da2661108 https://twitter.com/infosecb/status/1774597228864139400 Press/Media Coverage
af854a3a-2127-422b-91ae-364da2661108 https://ubuntu.com/security/CVE-2024-3094 Third Party Advisory
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 Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 https://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils Third Party Advisory
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 Mailing List
af854a3a-2127-422b-91ae-364da2661108 https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.theregister.com/2024/03/29/malicious_backdoor_xz/ Press/Media Coverage
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/ Third Party Advisory
Impacted products
Vendor Product Version
Version: 5.6.0
Version: 5.6.1
Create a notification for this product.
Show details on NVD website


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              "cweId": "CWE-506",
              "description": "Embedded Malicious Code",
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              "type": "CWE"
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        {
          "lang": "en",
          "time": "2024-03-27T00:00:00+00:00",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2024-03-29T00:00:00+00:00",
          "value": "Made public."
        }
      ],
      "title": "Xz: malicious code in distributed source",
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    }
  },
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    "dateReserved": "2024-03-29T15:38:13.249Z",
    "dateUpdated": "2025-08-19T01:03:12.439Z",
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\"value\": \"Red Hat would like to thank Andres Freund for reporting this issue.\"}], \"metrics\": [{\"other\": {\"type\": \"Red Hat severity rating\", \"content\": {\"value\": \"Critical\", \"namespace\": \"https://access.redhat.com/security/updates/classification/\"}}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 10, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"versions\": [{\"status\": \"affected\", \"version\": \"5.6.0\"}, {\"status\": \"affected\", \"version\": \"5.6.1\"}], \"packageName\": \"xz\", \"collectionURL\": \"https://github.com/tukaani-project/xz\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": 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      "cveMetadata": "{\"cveId\": \"CVE-2024-3094\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-08-19T01:03:12.439Z\", \"dateReserved\": \"2024-03-29T15:38:13.249Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2024-03-29T16:51:12.588Z\", \"assignerShortName\": \"redhat\"}",
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}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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