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

http://security.gentoo.org/

Severity:	high
Title:	MIT Kerberos 5: Multiple local privilege escalation vulnerabilities
Date:	08/10/2006
Bugs:	#143240
ID:	200608-15

Synopsis

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

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.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-crypt/mit-krb5	< 1.4.3-r3	>= 1.4.3-r3	All supported architectures

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

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200608-15.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.