xz m4 File malicious code

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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9.9$0-$5k0.00

Summaryinfo

A vulnerability classified as very critical was found in xz. Affected by this vulnerability is an unknown functionality of the component m4 File Handler. The manipulation results in malicious code. This vulnerability is known as CVE-2024-3094. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in xz (version unknown). It has been classified as very critical. Affected is an unknown function of the component m4 File Handler. The manipulation with an unknown input leads to a malicious code vulnerability. CWE is classifying the issue as CWE-506. The product contains code that appears to be malicious in nature. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2024-3094 since 03/29/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/06/2025).

It is declared as attacked.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (871). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.9

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 10.0
NVD Vector: 🔍

CNA Base Score: 10.0
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Malicious code
CWE: CWE-506
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/29/2024 🔍
03/29/2024 +0 days 🔍
03/29/2024 +0 days 🔍
02/06/2025 +314 days 🔍

Sourcesinfo

Advisory: GHSA-rxwq-x6h5-x525
Status: Confirmed

CVE: CVE-2024-3094 (🔍)
GCVE (CVE): GCVE-0-2024-3094
GCVE (VulDB): GCVE-100-258720
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/29/2024 18:21
Updated: 02/06/2025 11:34
Changes: 03/29/2024 18:21 (58), 05/08/2024 07:11 (1), 05/08/2024 07:16 (1), 06/05/2024 05:23 (6), 02/06/2025 11:34 (12)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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