Heimdal: Multiple local privilege escalation vulnerabilities

1. Gentoo Linux Security Advisory

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-crypt/heimdal	< 0.7.2-r3	>= 0.7.2-r3	All supported architectures

Related bugreports: #143371

Certain Heimdal components, ftpd and rcp, are vulnerable to a local privilege escalation.

2. Impact Information

Heimdal is a free implementation of Kerberos 5.

The ftpd and rcp applications provided by Heimdal fail to check the return value of calls to seteuid().

A local attacker could exploit this vulnerability to execute arbitrary code with elevated privileges.

3. Resolution Information

There is no known workaround at this time.

All Heimdal users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-0.7.2-r3"

4. References

Page updated August 23, 2006

Summary: This is a Gentoo Linux Security Advisory

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