CVE-1999-0098: Buffer Overflow
Buffer overflow in SMTP HELO command in Sendmail allows a remote attacker to hide activities.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Remove
Remove
Sendmailfrom your environment.Uninstall Sendmail if it is not required, or stop/disable the Sendmail service until a vendor fix is available.
- Compensating control
Restrict network access to SMTP (TCP port 25) for affected hosts using firewall rules, ACLs, or network segmentation; allow only trusted hosts to connect until a vendor fix is available.
- Operational
Monitor mail server logs for anomalous HELO/EHLO commands and other signs of exploitation; block or isolate offending IPs and capture logs/evidence for forensic analysis.
Event History
Frequently Asked Questions
What is the severity of CVE-1999-0098?
CVE-1999-0098 is considered a high severity vulnerability due to its potential for remote exploitation.
How do I fix CVE-1999-0098?
To fix CVE-1999-0098, update affected mail server software to the latest version that addresses the buffer overflow issue.
What systems are affected by CVE-1999-0098?
CVE-1999-0098 affects Apple Appleshare, Mercury Mail Server, and Slmail version 2.6.
What type of vulnerability is CVE-1999-0098?
CVE-1999-0098 is a buffer overflow vulnerability that occurs during the processing of the SMTP HELO command.
Can CVE-1999-0098 lead to remote code execution?
Yes, CVE-1999-0098 could potentially allow a remote attacker to execute arbitrary code by exploiting the buffer overflow.