CVE-2024-3094
"xz Liblzma Backdoor"
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.
INFO
Published Date :
March 29, 2024, 5:15 p.m.
Last Modified :
May 1, 2024, 7:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
6.0
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2024-3094 has a 131 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-3094.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
JavaScript
None
Makefile Dockerfile Go
My stars. View raw for full list.
None
Just a script to test if xz is vulnerable to the cve 2024-3094.
Rust
GNU IFUNC is the real culprit behind CVE-2024-3094
cve-2024-3094 dynamic-loading xz-utils-backdoor ifunc global-offset-table procedure-linkage-table relro ssh systemd elf glibc supply-chain memes dynamic-linking
Makefile C Dockerfile
SSH EXPLOIT BYPASS AUTH SSH
C
Basic POC to test CVE-2024-3094 vulnerability inside K8s cluster
Shell
None
Go Python
None
Shell
A dynamically generated and organized list of repositories I've starred on GitHub
Presentazione per il corsi di sicurezza Informatica sulla vulnerabilità CVE-2024-3094
TeX
A Terminal UI for browsing security vulnerabilities (CVEs)
cve cve-search ratatui ratatui-rs rust security security-vulnerability tui vulnerability vulnerability-search terminal-ui terminal-user-interface
Rust
XZ Utils CVE-2024-3094 POC for Kubernetes
Starred Repositories
starred starred-repositories
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-3094 vulnerability anywhere in the article.
-
The Hacker News
Leveraging Wazuh for Zero Trust security
Zero Trust security changes how organizations handle security by doing away with implicit trust while continuously analyzing and validating access requests. Contrary to perimeter-based security, users ... Read more
-
BleepingComputer
How open source SIEM and XDR tackle evolving threats
In today's cybersecurity landscape, evolving threats require security solutions that match the sophistication of modern threats. As businesses rapidly adopt emerging technologies, their exposure to cy ... Read more
-
Kaspersky
IT threat evolution Q2 2024
Targeted attacks XZ backdoor: a supply chain attack in the making On March 29, a message on the Openwall oss-security mailing list announced the discovery of a backdoor in XZ, a compression utility in ... Read more
-
Kaspersky
APT trends report Q2 2024
For over six years now, Kaspersky’s Global Research and Analysis Team (GReAT) has been sharing quarterly updates on advanced persistent threats (APTs). These summaries draw on our threat intelligence ... Read more
The following table lists the changes that have been made to the
CVE-2024-3094 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/29/12 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/04/16/5 [No types assigned] -
CVE Modified by [email protected]
May. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/30/27 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/29/10 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/30/36 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/29/8 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/30/5 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/29/5 [No types assigned] Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/29/4 [No types assigned] -
CVE Modified by [email protected]
May. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. http://www.openwall.com/lists/oss-security/2024/03/30/12 [No types assigned] -
CVE Modified by [email protected]
Apr. 12, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://blog.netbsd.org/tnf/entry/statement_on_backdoor_in_xz [No types assigned] -
CVE Modified by [email protected]
Apr. 03, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://ariadne.space/2024/04/02/the-xz-utils-backdoor-is-a-symptom-of-a-larger-problem/ [No types assigned] Added Reference Red Hat, Inc. https://research.swtch.com/xz-timeline [No types assigned] Added Reference Red Hat, Inc. https://research.swtch.com/xz-script [No types assigned] -
CVE Modified by [email protected]
Apr. 03, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://www.kali.org/blog/about-the-xz-backdoor/ [No types assigned] -
CVE Modified by [email protected]
Apr. 02, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240402-0001/ [No types assigned] -
CVE Modified by [email protected]
Apr. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://github.com/amlweems/xzbot [No types assigned] Added Reference Red Hat, Inc. https://news.ycombinator.com/item?id=39895344 [No types assigned] Added Reference Red Hat, Inc. https://www.vicarius.io/vsociety/vulnerabilities/cve-2024-3094 [No types assigned] -
Initial Analysis by [email protected]
Apr. 01, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Changed Reference Type https://access.redhat.com/security/cve/CVE-2024-3094 No Types Assigned https://access.redhat.com/security/cve/CVE-2024-3094 Vendor Advisory Changed Reference Type https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/ No Types Assigned https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/ Third Party Advisory Changed Reference Type https://aws.amazon.com/security/security-bulletins/AWS-2024-002/ No Types Assigned https://aws.amazon.com/security/security-bulletins/AWS-2024-002/ Third Party Advisory Changed Reference Type https://boehs.org/node/everything-i-know-about-the-xz-backdoor No Types Assigned https://boehs.org/node/everything-i-know-about-the-xz-backdoor Third Party Advisory Changed Reference Type https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024 No Types Assigned https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024 Mailing List, Vendor Advisory Changed Reference Type https://bugs.gentoo.org/928134 No Types Assigned https://bugs.gentoo.org/928134 Issue Tracking, Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2272210 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2272210 Issue Tracking, Vendor Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1222124 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1222124 Issue Tracking, Third Party Advisory Changed Reference Type https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405 No Types Assigned https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405 Third Party Advisory Changed Reference Type https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27 No Types Assigned https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27 Third Party Advisory Changed Reference Type https://github.com/advisories/GHSA-rxwq-x6h5-x525 No Types Assigned https://github.com/advisories/GHSA-rxwq-x6h5-x525 Third Party Advisory Changed Reference Type https://github.com/karcherm/xz-malware No Types Assigned https://github.com/karcherm/xz-malware Third Party Advisory Changed Reference Type https://gynvael.coldwind.pl/?lang=en&id=782 No Types Assigned https://gynvael.coldwind.pl/?lang=en&id=782 Technical Description, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-security-announce/2024/msg00057.html No Types Assigned https://lists.debian.org/debian-security-announce/2024/msg00057.html Mailing List, Third Party Advisory Changed Reference Type https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html No Types Assigned https://lists.freebsd.org/archives/freebsd-security/2024-March/000248.html Third Party Advisory Changed Reference Type https://lwn.net/Articles/967180/ No Types Assigned https://lwn.net/Articles/967180/ Issue Tracking, Third Party Advisory Changed Reference Type https://news.ycombinator.com/item?id=39865810 No Types Assigned https://news.ycombinator.com/item?id=39865810 Issue Tracking, Third Party Advisory Changed Reference Type https://news.ycombinator.com/item?id=39877267 No Types Assigned https://news.ycombinator.com/item?id=39877267 Issue Tracking Changed Reference Type https://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/ No Types Assigned https://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/ Third Party Advisory Changed Reference Type https://security.alpinelinux.org/vuln/CVE-2024-3094 No Types Assigned https://security.alpinelinux.org/vuln/CVE-2024-3094 Third Party Advisory Changed Reference Type https://security.archlinux.org/CVE-2024-3094 No Types Assigned https://security.archlinux.org/CVE-2024-3094 Third Party Advisory Changed Reference Type https://security-tracker.debian.org/tracker/CVE-2024-3094 No Types Assigned https://security-tracker.debian.org/tracker/CVE-2024-3094 Third Party Advisory Changed Reference Type https://tukaani.org/xz-backdoor/ No Types Assigned https://tukaani.org/xz-backdoor/ Issue Tracking, Vendor Advisory Changed Reference Type https://twitter.com/debian/status/1774219194638409898 No Types Assigned https://twitter.com/debian/status/1774219194638409898 Press/Media Coverage Changed Reference Type https://twitter.com/infosecb/status/1774595540233167206 No Types Assigned https://twitter.com/infosecb/status/1774595540233167206 Press/Media Coverage Changed Reference Type https://twitter.com/infosecb/status/1774597228864139400 No Types Assigned https://twitter.com/infosecb/status/1774597228864139400 Press/Media Coverage Changed Reference Type https://twitter.com/LetsDefendIO/status/1774804387417751958 No Types Assigned https://twitter.com/LetsDefendIO/status/1774804387417751958 Third Party Advisory Changed Reference Type 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://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users Vendor Advisory Changed Reference Type https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils No Types Assigned https://www.tenable.com/blog/frequently-asked-questions-cve-2024-3094-supply-chain-backdoor-in-xz-utils Third Party Advisory Changed Reference Type https://www.theregister.com/2024/03/29/malicious_backdoor_xz/ No Types Assigned https://www.theregister.com/2024/03/29/malicious_backdoor_xz/ Press/Media Coverage Changed Reference Type https://xeiaso.net/notes/2024/xz-vuln/ No Types Assigned https://xeiaso.net/notes/2024/xz-vuln/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:tukaani:xz:5.6.0:*:*:*:*:*:*:* *cpe:2.3:a:tukaani:xz:5.6.1:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://twitter.com/LetsDefendIO/status/1774804387417751958 [No types assigned] -
CVE Modified by [email protected]
Apr. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://ubuntu.com/security/CVE-2024-3094 [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://bugs.gentoo.org/928134 [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://twitter.com/debian/status/1774219194638409898 [No types assigned] Added Reference Red Hat, Inc. https://twitter.com/infosecb/status/1774597228864139400 [No types assigned] Added Reference Red Hat, Inc. https://twitter.com/infosecb/status/1774595540233167206 [No types assigned] Added Reference Red Hat, Inc. https://gist.github.com/thesamesam/223949d5a074ebc3dce9ee78baad9e27 [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://github.com/karcherm/xz-malware [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://xeiaso.net/notes/2024/xz-vuln/ [No types assigned] Added Reference Red Hat, Inc. https://lwn.net/Articles/967180/ [No types assigned] 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://tukaani.org/xz-backdoor/ [No types assigned] -
CVE Modified by [email protected]
Mar. 31, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://news.ycombinator.com/item?id=39877267 [No types assigned] Added Reference Red Hat, Inc. https://gynvael.coldwind.pl/?lang=en&id=782 [No types assigned] -
CVE Modified by [email protected]
Mar. 30, 2024
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 [email protected]
Mar. 30, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://news.ycombinator.com/item?id=39865810 [No types assigned] 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://www.theregister.com/2024/03/29/malicious_backdoor_xz/ [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://aws.amazon.com/security/security-bulletins/AWS-2024-002/ [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://openssf.org/blog/2024/03/30/xz-backdoor-cve-2024-3094/ [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://security.archlinux.org/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-tracker.debian.org/tracker/CVE-2024-3094 [No types assigned] -
CVE Modified by [email protected]
Mar. 29, 2024
Action Type Old Value New Value Changed Description 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 software, like sshd, to provide functionality that will be interpreted by the modified functions. 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. -
CVE Received by [email protected]
Mar. 29, 2024
Action Type Old Value New Value Added Description 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 software, like sshd, to provide functionality that will be interpreted by the modified functions. 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] Added CWE Red Hat, Inc. CWE-506 Added CVSS V3.1 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-3094 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-3094
weaknesses.