HOME VULNERABILITIESCVE-2024-3094

CRITICAL

CVE-2024-3094

CWE-506Published: March 29, 2024· Updated: Jun 17, 2026

10.0

CVSS v3.1

Official 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.

Technical Analysis

CVE-2024-3094 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 10.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

tukaani1 product(s)

xz

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://access.redhat.com/security/cve/CVE-2024-3094

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2272210

ADVISORYhttps://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users

ADVISORYhttps://access.redhat.com/security/cve/CVE-2024-3094

ADVISORYhttps://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/

ADVISORYhttps://aws.amazon.com/security/security-bulletins/AWS-2024-002/

ADVISORYhttps://boehs.org/node/everything-i-know-about-the-xz-backdoor

ADVISORYhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024

ADVISORYhttps://bugs.gentoo.org/928134

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2272210

ADVISORYhttps://bugzilla.suse.com/show_bug.cgi?id=1222124

ADVISORYhttps://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405

ADVISORYhttps://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27

ADVISORYhttps://github.com/advisories/GHSA-rxwq-x6h5-x525

ADVISORYhttps://github.com/karcherm/xz-malware

ADVISORYhttps://gynvael.coldwind.pl/?lang=en&id=782

ADVISORYhttps://lists.debian.org/debian-security-announce/2024/msg00057.html

ADVISORYhttps://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html

ADVISORYhttps://lwn.net/Articles/967180/

ADVISORYhttps://news.ycombinator.com/item?id=39865810

ADVISORYhttps://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/

ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2024-3094

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2024-3094

ADVISORYhttps://security.archlinux.org/CVE-2024-3094

ADVISORYhttps://tukaani.org/xz-backdoor/

ADVISORYhttps://twitter.com/LetsDefendIO/status/1774804387417751958

ADVISORYhttps://ubuntu.com/security/CVE-2024-3094

ADVISORYhttps://www.cisa.gov/news-events/alerts/2024/03/29/reported-supply-chain-compromise-affecting-xz-utils-data-compression-library-cve-2024-3094

ADVISORYhttps://www.darkreading.com/vulnerabilities-threats/are-you-affected-by-the-backdoor-in-xz-utils

ADVISORYhttps://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users

ADVISORYhttps://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils

ADVISORYhttps://xeiaso.net/notes/2024/xz-vuln/

All References (59)

→

https://access.redhat.com/security/cve/CVE-2024-3094Vendor Advisory

→

https://bugzilla.redhat.com/show_bug.cgi?id=2272210Issue Tracking · Vendor Advisory

→

https://www.openwall.com/lists/oss-security/2024/03/29/4Mailing List

→

https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-usersVendor Advisory

→

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/security/cve/CVE-2024-3094Vendor Advisory

Quick Facts

CVE IDCVE-2024-3094

CVSS Score10.0 / 10

SeverityCRITICAL

WeaknessCWE-506

CISA KEVNo

Affected1 vendor(s)

PublishedMar 29, 2024

Related CVEs (CWE-506)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2024-3094 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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