MIT Kerberos 5: Multiple local privilege escalation vulnerabilities — GLSA 200608-15

Some applications shipped with MIT Kerberos 5 are vulnerable to local privilege escalation.

Affected Packages

app-crypt/mit-krb5 on all architectures
Affected versions < 1.4.3-r3
Unaffected versions >= 1.4.3-r3

Background

MIT Kerberos 5 is a suite of applications that implement the Kerberos network protocol. It is designed to provide strong authentication for client/server applications by using secret-key cryptography.

Description

Unchecked calls to setuid() in krshd and v4rcp, as well as unchecked calls to seteuid() in kftpd and in ksu, have been found in the MIT Kerberos 5 program suite and may lead to a local root privilege escalation.

Impact

A local attacker could exploit this vulnerability to execute arbitrary code with elevated privileges.

Workaround

There is no known workaround at this time.

Resolution

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

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.4.3-r3"

References

Release Date
August 10, 2006

Latest Revision
August 10, 2006: 01

Severity
high

Exploitable
local

Bugzilla entries