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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 >> [DSA757] DSA-757-1 krb5 Vulnerability Assessment Details
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[DSA757] DSA-757-1 krb5 |
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DSA-757-1 krb5 Detailed Explanation for this Vulnerability Assessment Daniel Wachdorf reported two problems in the MIT krb5 distribution used for network authentication. First, the KDC program from the krb5-kdc package can corrupt the heap by trying to free memory which has already been freed on receipt of a certain TCP connection. This vulnerability can cause the KDC to crash, leading to a denial of service. [CVE-2005-1174] Second, under certain rare circumstances this type of request can lead to a buffer overflow and remote code execution. [CVE-2005-1175] Additionally, Magnus Hagander reported another problem in which the krb5_recvauth function can in certain circumstances free previously freed memory, potentially leading to the execution of remote code. [CVE-2005-1689] All of these vulnerabilities are believed difficult to exploit, and no exploits have yet been discovered. For the old stable distribution (woody), these problems have been fixed in version 1.2.4-5woody10. Note that woody's KDC does not have TCP support and is not vulnerable to CVE-2005-1174. For the stable distribution (sarge), these problems have been fixed in version 1.3.6-2sarge2. For the unstable distribution (sid), these problems have been fixed in version 1.3.6-4. We recommend that you upgrade your krb5 package. Solution : http://www.debian.org/security/2005/dsa-757 Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: This script is (C) 2007 Michel Arboi |
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Routers, Wired |
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