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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200405-23] Heimdal: Kerberos 4 buffer overflow in kadmin


Vulnerability Assessment Details

[GLSA-200405-23] Heimdal: Kerberos 4 buffer overflow in kadmin

Vulnerability Assessment Summary
Heimdal: Kerberos 4 buffer overflow in kadmin

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200405-23
(Heimdal: Kerberos 4 buffer overflow in kadmin)


A buffer overflow was discovered in kadmind, a server for administrative
access to the Kerberos database.

Impact

By sending a specially formatted message to kadmind, a remote attacker may
be able to crash kadmind causing a denial of service, or execute arbitrary
code with the permissions of the kadmind process.

Workaround

For a temporary workaround, providing you do not require Kerberos 4
support, you may turn off Kerberos 4 kadmin by running kadmind with the
--no-kerberos4 option.

References:
http://www.pdc.kth.se/heimdal/advisory/2004-05-06/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0434


Solution:
All Heimdal users should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=app-crypt/heimdal-0.6.2"
# emerge ">=app-crypt/heimdal-0.6.2"


Network Security Threat Level: High


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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