Malicious Backdoored liblzma Loaded by sshd (CVE-2024-3094)
- Product
- linux
- Category
- image_load
- Author
- HuntRule
- Published
- 2026-05-17
- Updated
- 2026-08-28
ATT&CK techniques
Initial Access → Cred AccessRecon
Resource Dev
Execution
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects the sshd process loading the backdoored liblzma shared object versions 5.6.0 or 5.6.1 associated with the XZ Utils supply chain compromise. Wiz Research described how this library hooks RSA_public_decrypt to grant remote code execution, so loading these specific versions indicates a compromised host.
Reporting behind it
- wiz.iohttps://www.wiz.io/blog/cve-2024-3094-critical-rce-vulnerability-found-in-xz-utils
- attack.mitre.orghttps://attack.mitre.org/techniques/T1195.001/
- attack.mitre.orghttps://attack.mitre.org/techniques/T1554/
- cybereason.comhttps://www.cybereason.com/blog/threat-alert-the-xz-backdoor
- attack.mitre.orghttps://attack.mitre.org/techniques/T1556/004/
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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