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UnrealIRCd Server Link TKL Command Denial of Service
Secunia Advisory: SA19188
Release Date: 2006-03-10
Last Update: 2006-03-16
Popularity: 6,474 views

Critical:
Less critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:UnrealIRCd 3.x

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CVE reference:CVE-2006-1214


Description:
A vulnerability has been reported in UnrealIRCd, which can be exploited by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the handling of the TKL command. This can be exploit to crash the service via a TKL command with specially-crafted arguments sent from another server.

Successful exploitation requires that the malicious server is allowed to connect via a server link.

The vulnerability has been reported in version 3.2.3. Prior versions may also be exploited.

Solution:
Update to version 3.2.4.
http://www.unrealircd.com/?page=downloads

Provided and/or discovered by:
Reported by vendor.

Additional information and POC by:
Brandon Milner

Changelog:
2006-03-16: Added CVE reference.

Original Advisory:
http://forums.unrealircd.com/viewtopic.php?t=2985


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