BNC getnickuserhost IRC Server Response Buffer Overflow Vulnerability

BID:11647

Info

BNC getnickuserhost IRC Server Response Buffer Overflow Vulnerability

Bugtraq ID: 11647
Class: Boundary Condition Error
CVE: CVE-2004-1052
Remote: Yes
Local: No
Published: Nov 10 2004 12:00AM
Updated: Jul 12 2009 08:06AM
Credit: Discovery is credited to Leon Juranic of LSS Security Team.
Vulnerable: Gentoo Linux
Debian Linux 3.0 sparc
Debian Linux 3.0 s/390
Debian Linux 3.0 ppc
Debian Linux 3.0 mipsel
Debian Linux 3.0 mips
Debian Linux 3.0 m68k
Debian Linux 3.0 ia-64
Debian Linux 3.0 ia-32
Debian Linux 3.0 hppa
Debian Linux 3.0 arm
Debian Linux 3.0 alpha
BNC BNC 2.8.9
BNC BNC 2.8.8
BNC BNC 2.6.4
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0
BNC BNC 2.6.2
BNC BNC 2.6
BNC BNC 2.4.8
BNC BNC 2.4.6
BNC BNC 2.2.4
Not Vulnerable: BNC BNC 2.9.1
+ Gentoo Linux
BNC BNC 2.9 .0

Discussion

BNC getnickuserhost IRC Server Response Buffer Overflow Vulnerability

A remotely exploitable stack-based buffer overflow has been reported in BNC. This issue may be triggered when a malformed IRC (Internet Relay Chat) server response is handled by the proxy.

If successfully exploited, this would allow execution of arbitrary code in the context of the proxy.

Exploit / POC

BNC getnickuserhost IRC Server Response Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

BNC getnickuserhost IRC Server Response Buffer Overflow Vulnerability

Solution:
This issue is addressed in version 2.9.0 and later.

Debian Linux has released an advisory (DSA 595-1) and fixes dealing with this issue. Please see referenced advisory for further information.

Gentoo Linux has released an advisory (GLSA 200411-24) dealing with this issue. Gentoo has advised that all BNC users should upgrade to the latest version:

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

For more information please see the referenced Gentoo Linux advisory.


BNC BNC 2.2.4

BNC BNC 2.4.6

BNC BNC 2.4.8

BNC BNC 2.6

BNC BNC 2.6.2

BNC BNC 2.6.4

BNC BNC 2.8.8

BNC BNC 2.8.9

References

BNC getnickuserhost IRC Server Response Buffer Overflow Vulnerability

References:

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