CVE-2018-25117 — VestaCP commit a3f0fa1 (2018-05-31) up to commit ee03eff (2018-06-13) contain em

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 m

01What is this vulnerability?

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…

02Affected products

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-10-15T01:23:35.427Z
• Last modified: 2025-11-21T14:27:57.668Z

09References

• www.welivesecurity.com — https://www.welivesecurity.com/2018/10/18/new-linux-chachaddos-malware-distribut…
• github.com — https://github.com/outroll/vesta/commit/ee03eff016e03cb76fac7ae3a0f9d1ef0f8ee35b…
• github.com — https://github.com/outroll/vesta/commit/a3f0fa1501d424477786e3e7150bb05c0b99518f…
• forum.vestacp.com — https://forum.vestacp.com/viewtopic.php?f=10&t=17641&p=73282
• forum.vestacp.com — https://forum.vestacp.com/viewtopic.php?f=10&t=17641&start=180#p73907
• vestacp.com — https://vestacp.com/
• github.com — https://github.com/outroll/vesta
• www.vulncheck.com — https://www.vulncheck.com/advisories/vestacp-debian-installer-malicious-backdoor…