[ GLSA 201202-05 ] Heimdal: Arbitrary code execution

[GLSA]

Gentoo Linux Security Advisory

Title: Heimdal: Arbitrary code execution (GLSA 201202-05)
Severity: high
Exploitable: remote
Date: February 22, 2012
Bug(s): #396105
ID: 201202-05

Synopsis

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


Background

Heimdal is a free implementation of Kerberos 5.

Affected Packages

Package: app-crypt/heimdal
Vulnerable: < 1.5.1-r1
Unaffected: >= 1.5.1-r1
Architectures: All supported architectures


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.


Workaround

There is no known workaround at this time.

Resolution

All Heimdal users should upgrade to the latest version: