MIT Kerberos 5 Applications: Multiple vulnerabilities

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.

Workaround

There is no known workaround at this time.

Resolution

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

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