CVE-2000-0158: Buffer Overflow
Buffer overflow in MMDF server allows remote attackers to gain privileges via a long MAIL FROM command to the SMTP daemon.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Remove
Remove
SCO OpenServer MMDF serverfrom your environment.Uninstall the MMDF mail server if SMTP functionality is not required.
- Configuration
Stop and disable the MMDF/SMTP daemon to prevent processing of MAIL FROM commands until a vendor patch is available.
MMDF (SCO OpenServer SMTP daemon) service_enabled = false - Compensating control
Block or restrict inbound SMTP (TCP port 25) at the network perimeter/firewall or allow it only from trusted hosts/IPs until the vulnerability is remediated.
- Operational
Monitor mail and system logs for suspicious long MAIL FROM commands or exploitation attempts and apply any vendor-supplied patch or advisory when released.
Event History
Frequently Asked Questions
What is the severity of CVE-2000-0158?
CVE-2000-0158 is considered a high severity vulnerability due to its ability to allow remote attackers to gain privileges.
How do I fix CVE-2000-0158?
To fix CVE-2000-0158, update the MMDF server to a patched version or disable the MAIL FROM command if possible.
Which software is affected by CVE-2000-0158?
CVE-2000-0158 affects multiple versions of Xinuos OpenServer, including 5.0, 5.0.2, 5.0.4, and 5.0.5.
What risk does CVE-2000-0158 pose to my system?
CVE-2000-0158 poses a significant risk as it enables remote exploitation, leading to potential privilege escalation on the server.
Is there a workaround for CVE-2000-0158?
A possible workaround for CVE-2000-0158 is to restrict access to the SMTP service or implement firewall rules to limit exposure.