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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200507-11] MIT Kerberos 5: Multiple vulnerabilities


Vulnerability Assessment Details

[GLSA-200507-11] MIT Kerberos 5: Multiple vulnerabilities

Vulnerability Assessment Summary
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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