GLSA 200410-13: BNC: Input validation flaw

http://security.gentoo.org/

Severity:	normal
Title:	BNC: Input validation flaw
Date:	10/15/2004
Bugs:	#66912
ID:	200410-13

Synopsis

BNC contains an input validation flaw which might allow a remote attacker to issue arbitrary IRC related commands.

Background

BNC is an IRC proxying server

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-irc/bnc	< 2.8.9	>= 2.8.9	All supported architectures

Description

A flaw exists in the input parsing of BNC where part of the sbuf_getmsg() function handles the backspace character incorrectly.

Impact

A remote user could issue commands using fake authentication credentials and possibly gain access to scripts running on the client side.

Workaround

There is no known workaround at this time.

Resolution

All BNC users should upgrade to the latest version:

    # emerge sync
    
    # emerge -pv ">=net-irc/bnc-2.8.9"
    # emerge ">=net-irc/bnc-2.8.9"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200410-13.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.