FKIE_CVE-2024-3094
Vulnerability from fkie_nvd - Published: 2024-03-29 17:15 - Updated: 2026-11-04 22:17
Severity
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10.0 (Critical) - CVSS:3.1/
Summary
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.
References
{
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{
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"product": "Red Hat Enterprise Linux 8",
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{
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"product": "Red Hat JBoss Enterprise Application Platform 8",
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}
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"source": "secalert@redhat.com"
}
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"configurations": [
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"nodes": [
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{
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0. \r\nThrough 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."
},
{
"lang": "es",
"value": "Se descubri\u00f3 c\u00f3digo malicioso en los archivos tar ascendentes de xz, a partir de la versi\u00f3n 5.6.0. A trav\u00e9s de una serie de ofuscaciones complejas, el proceso de compilaci\u00f3n de liblzma extrae un archivo objeto premanipulado de un archivo de prueba disfrazado existente en el c\u00f3digo fuente, que luego se utiliza para modificar funciones espec\u00edficas en el c\u00f3digo de liblzma. Esto da como resultado una librer\u00eda liblzma modificada que puede ser utilizada por cualquier software vinculado a esta librer\u00eda, interceptando y modificando la interacci\u00f3n de datos con esta librer\u00eda."
}
],
"id": "CVE-2024-3094",
"lastModified": "2026-11-04T22:17:21.430",
"metrics": {
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"baseScore": 10.0,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
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"type": "Secondary"
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"version": "3.1"
},
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"impactScore": 6.0,
"source": "nvd@nist.gov",
"type": "Primary"
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"options": [
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{
"automatable": "yes"
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],
"role": "CISA Coordinator",
"timestamp": "2024-04-02T04:00:23.138684Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-03-29T17:15:21.150",
"references": [
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://ariadne.space/2024/04/02/the-xz-utils-backdoor-is-a-symptom-of-a-larger-problem/"
},
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"url": "https://arstechnica.com/security/2024/03/backdoor-found-in-widely-used-linux-utility-breaks-encrypted-ssh-connections/"
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"url": "https://aws.amazon.com/security/security-bulletins/AWS-2024-002/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://blog.netbsd.org/tnf/entry/statement_on_backdoor_in_xz"
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"url": "https://boehs.org/node/everything-i-know-about-the-xz-backdoor"
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"url": "https://discourse.nixos.org/t/cve-2024-3094-malicious-code-in-xz-5-6-0-and-5-6-1-tarballs/42405"
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"url": "https://github.com/amlweems/xzbot"
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{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://research.swtch.com/xz-script"
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"url": "https://research.swtch.com/xz-timeline"
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
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}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.