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Heimdal: Arbitrary code execution

Content:

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

Synopsis

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

2.  Impact Information

Background

Heimdal is a free implementation of Kerberos 5.

Description

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.

Impact

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

Workaround

There is no known workaround at this time.

Resolution

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



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Page updated February 22, 2012

Summary: This is a Gentoo Linux Security Advisory

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