CVE-1999-0846: Medium severity Deerfield Mdaemon vulnerability
Denial of service in MDaemon 2.7 via a large number of connection attempts.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Implement network-level rate limiting and connection throttling at the edge (firewall, load balancer, or reverse proxy) to limit the number of concurrent and new connections targeting the MDaemon service to mitigate large bursts of connection attempts.
- Compensating control
Restrict inbound access to the MDaemon host(s) to only required/trusted IP ranges via firewall rules or ACLs; block or quarantine IPs that generate excessive connection attempts using automated rules or IP reputation/blacklist feeds.
- Compensating control
Deploy DDoS protection or a scrubbing service (cloud DDoS mitigation, CDN, or application delivery controller) in front of MDaemon to absorb or filter volumetric/connection-based attack traffic.
- Operational
Monitor MDaemon connection and access logs for spikes in connection attempts, establish alerting for anomalous connection rates, and proactively block offending sources. If service availability is impacted, follow incident response procedures (temporary blocking, failover, and service restart) while mitigations are applied.
Event History
Frequently Asked Questions
What is the severity of CVE-1999-0846?
CVE-1999-0846 is classified as a denial of service vulnerability.
How do I fix CVE-1999-0846?
To mitigate CVE-1999-0846, limit incoming connection attempts and consider implementing rate limiting on Deerfield MDaemon.
Which versions of MDaemon are affected by CVE-1999-0846?
MDaemon versions 2.8.5 and 2.8.6 are affected by CVE-1999-0846.
What is the nature of the attack in CVE-1999-0846?
CVE-1999-0846 allows an attacker to cause a denial of service by initiating a large number of connection attempts.
Is there a patch available for CVE-1999-0846?
As of now, specific patches for CVE-1999-0846 have not been detailed.