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CVE-2024-3094— Xz: malicious code in distributed source

Quick assessment

Affected
CVE-2024-3094
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

xz是一个应用软件。用于支持读取和写入xz压缩流。 XZ Utils 5.6.0版本和5.6.1版本存在安全漏洞，该漏洞源于允许攻击者嵌入恶意代码。

CVSS 10.0 · Critical EPSS 85.97% · P100

Affected Version Matrix 8

VendorProduct Version RangeStatus
None None 5.6.0 affected
5.6.1 affected
Red Hat Red Hat Enterprise Linux 10 any unaffected
Red Hat Red Hat Enterprise Linux 6 any unaffected
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8 any unaffected

I. Basic Information for CVE-2024-3094

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Xz: malicious code in distributed source
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内嵌的恶意代码
Source: CVE Program / CVE List V5
Vulnerability Title
xz 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
xz是一个应用软件。用于支持读取和写入xz压缩流。 XZ Utils 5.6.0版本和5.6.1版本存在安全漏洞，该漏洞源于允许攻击者嵌入恶意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 5.6.0 -
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat JBoss Enterprise Application Platform 8 - cpe:/a:redhat:jboss_enterprise_application_platform:8

II. Public POCs for CVE-2024-3094

# POC Description Source Link Shenlong Link
1 Information for CVE-2024-3094 https://github.com/byinarie/CVE-2024-3094-info POC Details
2 Quick and dirty PoC for checking whether a vulnerable version of xz-utils is installed (CVE-2024-3094) https://github.com/FabioBaroni/CVE-2024-3094-checker POC Details
3 Verify that your XZ Utils version is not vulnerable to CVE-2024-3094 https://github.com/lypd0/CVE-2024-3094-Vulnerabity-Checker POC Details
4 None https://github.com/OpensourceICTSolutions/xz_utils-CVE-2024-3094 POC Details
5 Script to detect CVE-2024-3094. https://github.com/bioless/xz_cve-2024-3094_detection POC Details
6 This repository contains a Bash script and a one-liner command to verify if a system is running a vulnerable version of the "xz" utility, as specified by CVE-2024-3094. https://github.com/Hacker-Hermanos/CVE-2024-3094_xz_check POC Details
7 None https://github.com/Fractal-Tess/CVE-2024-3094 POC Details
8 None https://github.com/wgetnz/CVE-2024-3094-check POC Details
9 History of commits related to the xz backdoor Discovered On March 29, 2024: CVE-2024-3094. https://github.com/emirkmo/xz-backdoor-github POC Details
10 xz exploit to privilege escalation in Linux https://github.com/Jooose001/CVE-2024-3094-EXPLOIT POC Details
11 None https://github.com/ashwani95/CVE-2024-3094 POC Details
12 Checker for CVE-2024-3094 where 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. https://github.com/harekrishnarai/xz-utils-vuln-checker POC Details
13 K8S and Docker Vulnerability Check for CVE-2024-3094 https://github.com/teyhouse/CVE-2024-3094 POC Details
14 This project contains a shell script designed to help users identify and fix installations of xz-utils affected by the CVE-2024-3094 vulnerability. Versions 5.6.0 and 5.6.1 of xz-utils are known to be vulnerable, and this script aids in detecting them and optionally downgrading to a stable, un-compromised version (5.4.6). https://github.com/alokemajumder/CVE-2024-3094-Vulnerability-Checker-Fixer POC Details
15 None https://github.com/Horizon-Software-Development/CVE-2024-3094 POC Details
16 None https://github.com/hazemkya/CVE-2024-3094-checker POC Details
17 An ssh honeypot with the XZ backdoor. CVE-2024-3094 https://github.com/lockness-Ko/xz-vulnerable-honeypot POC Details
18 None https://github.com/brinhosa/CVE-2024-3094-One-Liner POC Details
19 CVE-2024-3094 https://github.com/isuruwa/CVE-2024-3094 POC Details
20 None https://github.com/k4t3pr0/Check-CVE-2024-3094 POC Details
21 A script to detect if xz is vulnerable - CVE-2024-3094 https://github.com/Yuma-Tsushima07/CVE-2024-3094 POC Details
22 None https://github.com/jfrog/cve-2024-3094-tools POC Details
23 None https://github.com/krascovict/OSINT---CVE-2024-3094- POC Details
24 Ansible playbook for patching CVE-2024-3094 https://github.com/Simplifi-ED/CVE-2024-3094-patcher POC Details
25 None https://github.com/gayatriracha/CVE-2024-3094-Nmap-NSE-script POC Details
26 None https://github.com/Mustafa1986/CVE-2024-3094 POC Details
27 XZ-Utils工具库恶意后门植入漏洞(CVE-2024-3094) https://github.com/MrBUGLF/XZ-Utils_CVE-2024-3094 POC Details
28 None https://github.com/galacticquest/cve-2024-3094-detect POC Details
29 None https://github.com/zgimszhd61/cve-2024-3094-detect-tool POC Details
30 None https://github.com/mightysai1997/CVE-2024-3094-info POC Details
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III. Intelligence Information for CVE-2024-3094

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Vendor Advisories for CVE-2024-3094 (9)

Mailing List Discussions for CVE-2024-3094 (13)

Security Blog Posts for CVE-2024-3094 (4)

News Coverage for CVE-2024-3094 (3)

Other References for CVE-2024-3094 (23)

IV. Related Vulnerabilities

Same weakness: CWE-506

V. Comments for CVE-2024-3094

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