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[ GLSA 200410-13 ] BNC: Input validation flaw
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GLSA
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Joined: 13 Jun 2003
Posts: 4078
Location: Barcelona, Spain

PostPosted: Fri Oct 15, 2004 12:08 pm    Post subject: [ GLSA 200410-13 ] BNC: Input validation flaw Reply with quote

Gentoo Linux Security Advisory

Title: BNC: Input validation flaw (GLSA 200410-13)
Severity: normal
Exploitable: remote
Date: October 15, 2004
Updated: May 22, 2006
Bug(s): #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: net-irc/bnc
Vulnerable: < 2.8.9
Unaffected: >= 2.8.9
Architectures: 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:
Code:
# emerge sync
# emerge -pv ">=net-irc/bnc-2.8.9"
# emerge ">=net-irc/bnc-2.8.9"


References

BNC Changes
CVE-2004-1482


Last edited by GLSA on Tue May 23, 2006 4:18 am; edited 2 times in total
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