MIT Kerberos 5 Applications: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201201-14 / mit-krb5-appl
Release Date	January 23, 2012
Latest Revision	January 23, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-crypt/mit-krb5-appl	< 1.0.2-r1	>= 1.0.2-r1	All supported architectures

Related bugreports: #374229, #396137

Synopsis

Multiple vulnerabilities have been found in MIT Kerberos 5 Applications, the most severe of which may allow execution of arbitrary code.

2. Impact Information

Background

A suite of applications that implement the Kerberos 5 network protocol from MIT.

Description

Multiple vulnerabilities have been discovered in MIT Kerberos 5 Applications:

An error in the FTP daemon prevents it from dropping its initial effective group identifier (CVE-2011-1526).
A boundary error in the telnet daemon and client could cause a buffer overflow (CVE-2011-4862).

Impact

An unauthenticated remote attacker may be able to execute arbitrary code with the privileges of the user running the telnet daemon or client. Furthermore, an authenticated remote attacker may be able to read or write files owned by the same group as the effective group of the FTP daemon.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All MIT Kerberos 5 Applications users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose
  ">=app-crypt/mit-krb5-appl-1.0.2-r1"

4. References

Page updated January 23, 2012

Summary: This is a Gentoo Linux Security Advisory

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