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[ GLSA 200411-24 ] BNC: Buffer overflow vulnerability
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GLSA
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Joined: 13 Jun 2003
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Location: Barcelona, Spain

PostPosted: Tue Nov 16, 2004 6:45 pm    Post subject: [ GLSA 200411-24 ] BNC: Buffer overflow vulnerability Reply with quote

Gentoo Linux Security Advisory

Title: BNC: Buffer overflow vulnerability (GLSA 200411-24)
Severity: high
Exploitable: remote
Date: November 16, 2004
Bug(s): #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: net-irc/bnc
Vulnerable: < 2.9.1
Unaffected: >= 2.9.1
Architectures: 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:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/bnc-2.9.1"


References

BNC ChangeLog
LSS-2004-11-03


Last edited by GLSA on Sun May 07, 2006 4:53 pm; edited 1 time in total
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