UnrealIRCd: Multiple vulnerabilities

Background

UnrealIRCd is an Internet Relay Chat (IRC) daemon.

Description

Multiple vulnerabilities have been reported in UnrealIRCd:

• The vendor reported a buffer overflow in the user authorization code (CVE-2009-4893).
• The vendor reported that the distributed source code of UnrealIRCd was compromised and altered to include a system() call that could be called with arbitrary user input (CVE-2010-2075).

Impact

A remote attacker could exploit these vulnerabilities to cause the execution of arbitrary commands with the privileges of the user running UnrealIRCd, or a Denial of Service condition. NOTE: By default UnrealIRCd on Gentoo is run with the privileges of the “unrealircd” user.

Workaround

There is no known workaround at this time.

Resolution

All UnrealIRCd users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-irc/unrealircd-3.2.8.1-r1"