ngIRCd: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200501-40 / ngIRCd
Release Date	January 28, 2005
Latest Revision	May 22, 2006: 02
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-irc/ngircd	< 0.8.2	>= 0.8.2	All supported architectures

Related bugreports: #79705

Synopsis

ngIRCd is vulnerable to a buffer overflow that can be used to crash the daemon and possibly execute arbitrary code.

2. Impact Information

Background

ngIRCd is a free open source daemon for Internet Relay Chat (IRC).

Description

Florian Westphal discovered a buffer overflow caused by an integer underflow in the Lists_MakeMask() function of lists.c.

Impact

A remote attacker can exploit this buffer overflow to crash the ngIRCd daemon and possibly execute arbitrary code with the rights of the ngIRCd daemon process.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ngIRCd users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/ngIRCd-0.8.2"

4. References

Updated January 28, 2005

Summary: This is a Gentoo Linux Security Advisory

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