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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 >> Gentoo Local Security Checks >> [GLSA-200507-11] MIT Kerberos 5: Multiple vulnerabilities Vulnerability Assessment Details
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[GLSA-200507-11] MIT Kerberos 5: Multiple vulnerabilities |
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MIT Kerberos 5: Multiple vulnerabilities Detailed Explanation for this Vulnerability Assessment The remote host is affected by the vulnerability described in GLSA-200507-11 (MIT Kerberos 5: Multiple vulnerabilities) Daniel Wachdorf discovered that MIT Kerberos 5 could corrupt the heap by freeing unallocated memory when receiving a special TCP request (CVE-2005-1174). He also discovered that the same request could lead to a single-byte heap overflow (CVE-2005-1175). Magnus Hagander discovered that krb5_recvauth() function of MIT Kerberos 5 might try to double-free memory (CVE-2005-1689). Impact Although exploitation is considered difficult, a remote attacker could exploit the single-byte heap overflow and the double-free vulnerability to execute arbitrary code, which could lead to the compromise of the whole Kerberos realm. A remote attacker could also use the heap corruption to cause a Denial of Service. Workaround There are no known workarounds at this time. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1174 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1175 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1689 http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-002-kdc.txt http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2005-003-recvauth.txt Solution: All MIT Kerberos 5 users should upgrade to the latest available version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.4.1-r1" Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: (C) 2005 Michel Arboi |
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