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Heimdal: Buffer overflow vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200506-24 / heimdal
Release Date June 29, 2005
Latest Revision June 29, 2005: 01
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
app-crypt/heimdal < 0.6.5 >= 0.6.5 All supported architectures

Related bugreports: #96727


Multiple buffer overflow vulnerabilities in Heimdal's telnetd server could allow the execution of arbitrary code.

2.  Impact Information


Heimdal is a free implementation of Kerberos 5 that includes a telnetd server.


It has been reported that the "getterminaltype" function of Heimdal's telnetd server is vulnerable to buffer overflows.


An attacker could exploit this vulnerability to execute arbitrary code with the permission of the telnetd server program.

3.  Resolution Information


There is no known workaround at this time.


All users should upgrade to the latest available version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-0.6.5"

4.  References


Page updated June 29, 2005

Summary: This is a Gentoo Linux Security Advisory

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