GLSA 200904-05: ntp: Certificate validation error

Severity:normal
Title:ntp: Certificate validation error
Date:04/05/2009
Bugs: #254098
ID:200904-05

Synopsis

An error in the OpenSSL certificate chain validation in ntp might allow for spoofing attacks.

Background

ntp contains the client and daemon implementations for the Network Time Protocol.

Affected packages

Package Vulnerable Unaffected Architecture(s)
net-misc/ntp < 4.2.4_p6 >= 4.2.4_p6 All supported architectures

Description

It has been reported that ntp incorrectly checks the return value of the EVP_VerifyFinal(), a vulnerability related to CVE-2008-5077 (GLSA 200902-02).

Impact

A remote attacker could exploit this vulnerability to spoof arbitrary names to conduct Man-In-The-Middle attacks and intercept sensitive information.

Workaround

There is no known workaround at this time.

Resolution

All ntp users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/ntp-4.2.4_p6"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200904-05.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.

License

Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

Thank you!