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CVE-2024-3094

Xz: malicious code in distributed source

Published: Mar 29, 2024Updated: Aug 19, 2025 Sources: CVE List NVD BDUCWE-506
NVD MITRE
10.0CVSSCRITICAL
EPSS Score
86.0%
Top 0.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-506

Affected Products

Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 6Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 14 more affected products View all →

Exploitability

Official Patch Available

References

https://access.redhat.com/security/cve/CVE-2024-3094
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2272210
bugzilla.redhat.com
https://www.openwall.com/lists/oss-security/2024/03/29/4
openwall.com
and 67 more references View all →

Timeline

Published
Mar 29, 2024
Last Updated
Aug 19, 2025
News mentions
1

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