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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 >> [DSA266] DSA-266-1 krb5 Vulnerability Assessment Details
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[DSA266] DSA-266-1 krb5 |
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DSA-266-1 krb5 Detailed Explanation for this Vulnerability Assessment Several vulnerabilities have been discovered in krb5, an implementation of MIT Kerberos. Kerberos version 5 does not contain this cryptographic vulnerability. Sites are not vulnerable if they have Kerberos v4 completely disabled, including the disabling of any krb5 to krb4 translation services. This version of the krb5 package changes the default behavior and dispermits cross-realm authentication for Kerberos version 4. Because of the fundamental nature of the problem, cross-realm authentication in Kerberos version 4 cannot be made secure and sites should avoid its use. A new option (-X) is provided to the krb5kdc and krb524d commands to re-enable version 4 cross-realm authentication for those sites that must use this functionality but desire the other security fixes. For the stable distribution (woody) this problem has been fixed in version 1.2.4-5woody4. The old stable distribution (potato) does not contain krb5 packages. For the unstable distribution (sid) this problem will be fixed soon. We recommend that you upgrade your krb5 package. Solution : http://www.debian.org/security/2003/dsa-266 Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi |
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