CVE-2025-34073: Command Injection

Description

An unauthenticated command injection vulnerability exists in stamparm/maltrail (Maltrail) versions <=0.54. A remote attacker can execute arbitrary operating system commands via the username parameter in a POST request to the /login endpoint. This occurs due to unsafe handling of user-supplied input passed to subprocess.check_output() in core/http.py, allowing injection of shell metacharacters. Exploitation does not require authentication and commands are executed with the privileges of the Maltrail process.

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Weakness Type (CWE)

CWE-78 OS Command Injection

CWE-306 Missing Authentication

References

Other References

https://github.com/stamparm/maltrail https://github.com/stamparm/maltrail/issues/19146 https://huntr.com/bounties/be3c5204-fbd9-448d-b97c-96a8d2941e87 https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/http/maltrail_rce.rb https://vulncheck.com/advisories/stamparm-maltrail-rce

Frequently Asked Questions

What is CVE-2025-34073? +

An unauthenticated command injection vulnerability exists in stamparm/maltrail (Maltrail) versions <=0.54. A remote attacker can execute arbitrary operating system commands via the username parameter in a POST request to the /login endpoint. This occurs due to unsafe handling of user-supplied input passed to subprocess.check_output() in core/http.py, allowing injection of shell metacharacters. Exploitation does not require authentication and commands are executed with the privileges of the Maltrail process.

How do I check if I'm vulnerable to CVE-2025-34073? +

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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