GLSA 200411-24: BNC: Buffer overflow vulnerability

http://security.gentoo.org/

Severity:	high
Title:	BNC: Buffer overflow vulnerability
Date:	11/16/2004
Bugs:	#70674
ID:	200411-24

Synopsis

BNC contains a buffer overflow vulnerability that may lead to Denial of Service and execution of arbitrary code.

Background

BNC (BouNCe) is an IRC proxy server.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-irc/bnc	< 2.9.1	>= 2.9.1	All supported architectures

Description

Leon Juranic discovered that BNC fails to do proper bounds checking when checking server response.

Impact

An attacker could exploit this to cause a Denial of Service and potentially execute arbitary code with the permissions of the user running BNC.

Workaround

There is no known workaround at this time.

Resolution

All BNC users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-irc/bnc-2.9.1"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200411-24.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.