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Vulnerability Assessment & Network Security Forums |
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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery. Home >> Browse Vulnerability Assessment Database >> Debian Local Security Checks >> [DSA198] DSA-198-1 nullmailer Vulnerability Assessment Details
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[DSA198] DSA-198-1 nullmailer |
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DSA-198-1 nullmailer Detailed Explanation for this Vulnerability Assessment A problem has been discovered in nullmailer, a simple relay-only mail transport agent for hosts that relay mail to a fixed set of smart relays. When a mail is to be delivered locally to a user that doesn't exist, nullmailer tries to deliver it, discovers a user unknown error and stops delivering. Unfortunately, it stops delivering entirely, not only this mail. Hence, it's very easy to craft a denial of service. This problem has been fixed in version 1.00RC5-16.1woody2 for the current stable distribution (woody) and in version 1.00RC5-17 for the unstable distribution (sid). The old stable distribution (potato) does not contain a nullmailer package. We recommend that you upgrade your nullmailer package. Solution : http://www.debian.org/security/2002/dsa-198 Network Security Threat Level: High Networks Security ID: 6193 Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi |
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