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Heimdal: Arbitrary code execution


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201202-05 / heimdal
Release Date February 22, 2012
Latest Revision February 22, 2012: 1
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
app-crypt/heimdal < 1.5.1-r1 >= 1.5.1-r1 All supported architectures

Related bugreports: #396105


A boundary error in Heimdal could result in execution of arbitrary code.

2.  Impact Information


Heimdal is a free implementation of Kerberos 5.


A boundary error in the "encrypt_keyid()" function in appl/telnet/libtelnet/encrypt.c of the telnet daemon and client could cause a buffer overflow.


An unauthenticated remote attacker may be able to execute arbitrary code with the privileges of the user running the telnet daemon or client, or cause Denial of Service.

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-1.5.1-r1"

4.  References


Page updated February 22, 2012

Summary: This is a Gentoo Linux Security Advisory

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