nullmailer non-existent user denial of service
| nullmailer-nonexistent-user-dos (10649) |  Medium Risk |
Description:
nullmailer is vulnerable to a denial of service attack. A local attacker could send a mail message to a non-existent user to stop the delivery of all mail on the system.
Consequences:
Denial of Service
Remedy:
For Debian GNU/Linux:
Upgrade to the latest nullmailer package, as listed below. Refer to DSA-198-1 for more information. See References.
Debian GNU/Linux 3.0 (woody): 1.00RC5-16.1woody2 or later
References:
- Untroubled Web site: Index of nullmailer.
- BID-6193: Nullmailer Invalid User Denial Of Service Vulnerability
- CVE-2002-1313: nullmailer 1.00RC5 and earlier allows local users to cause a denial of service via an email to a local user that does not exist, which generates an error that causes nullmailer to stop sending mail to all users.
- DSA-198: nullmailer -- denial of service
- OSVDB ID: 14522: nullmailer Local Nonexistent User Mail DoS
Platforms Affected:
- Debian Debian Linux 3.0
- untroubled nullmailer
Reported:
Nov 18, 2002
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