MIT Kerberos 5: Multiple local privilege escalation vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200608-15 / MIT Kerberos 5
||August 10, 2006
||August 10, 2006: 01
All supported architectures
Some applications shipped with MIT Kerberos 5 are vulnerable to local
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.
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
A local attacker could exploit this vulnerability to execute arbitrary
code with elevated privileges.
There is no known workaround at this time.
All MIT Kerberos 5 users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.4.3-r3"