CVE-2018-25117

Description

VestaCP commit a3f0fa1 (2018-05-31) up to commit ee03eff (2018-06-13) contain embedded malicious code that resulted in a supply-chain compromise. New installations created from the compromised installer since at least May 2018 were subject to installation of Linux/ChachaDDoS, a multi-stage DDoS bot that uses Lua for second- and third-stage components. The compromise leaked administrative credentials (base64-encoded admin password and server domain) to an external URL during installation and/or resulted in the installer dropping and executing a DDoS malware payload under local system privileges. Compromised servers were subsequently observed participating in large-scale DDoS activity. Vesta acknowledged exploitation in the wild in October 2018.

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Weakness Type (CWE)

CWE-506 CWE-506

References

Other References

https://forum.vestacp.com/viewtopic.php?f=10&t=17641&p=73282 https://forum.vestacp.com/viewtopic.php?f=10&t=17641&start=180#p73907 https://github.com/outroll/vesta https://github.com/outroll/vesta/commit/a3f0fa1501d424477786e3e7150bb05c0b99518f#diff-df8da0c91e9086454c60cd468849630dR1256 https://github.com/outroll/vesta/commit/ee03eff016e03cb76fac7ae3a0f9d1ef0f8ee35b#diff-df8da0c91e9086454c60cd468849630dL1270 https://vestacp.com/ https://www.vulncheck.com/advisories/vestacp-debian-installer-malicious-backdoor-supply-chain-compromise https://www.welivesecurity.com/2018/10/18/new-linux-chachaddos-malware-distributed-servers-vestacp-installed/

Frequently Asked Questions

What is CVE-2018-25117? +

VestaCP commit a3f0fa1 (2018-05-31) up to commit ee03eff (2018-06-13) contain embedded malicious code that resulted in a supply-chain compromise. New installations created from the compromised installer since at least May 2018 were subject to installation of Linux/ChachaDDoS, a multi-stage DDoS bot that uses Lua for second- and third-stage components. The compromise leaked administrative credentials (base64-encoded admin password and server domain) to an external URL during installation and/or resulted in the installer dropping and executing a DDoS malware payload under local system privileges. Compromised servers were subsequently observed participating in large-scale DDoS activity. Vesta acknowledged exploitation in the wild in October 2018.

How do I check if I'm vulnerable to CVE-2018-25117? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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