GLSA 200707-11: MIT Kerberos 5: Arbitrary remote code execution

http://security.gentoo.org/

Severity:	high
Title:	MIT Kerberos 5: Arbitrary remote code execution
Date:	07/25/2007
Bugs:	#183338
ID:	200707-11

Synopsis

Multiple vulnerabilities in MIT Kerberos 5 could potentially result in remote code execution with root privileges by unauthenticated users.

Background

MIT Kerberos 5 is a suite of applications that implement the Kerberos network protocol.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
app-crypt/mit-krb5	< 1.5.2-r3	>= 1.5.2-r3	All supported architectures

Description

kadmind is affected by multiple vulnerabilities in the RPC library shipped with MIT Kerberos 5. It fails to properly handle zero-length RPC credentials (CVE-2007-2442) and the RPC library can write past the end of the stack buffer (CVE-2007-2443). Furthermore kadmind fails to do proper bounds checking (CVE-2007-2798).

Impact

A remote unauthenticated attacker could exploit these vulnerabilities to execute arbitrary code with root 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-krb5-1.5.2-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-200707-11.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.