[NT] XiRCON Vulnerable to a Denial of Service

From: support@securiteam.com
Date: 07/07/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Sun,  7 Jul 2002 07:50:29 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  XiRCON Vulnerable to a Denial of Service
------------------------------------------------------------------------

SUMMARY

 <http://www.xircon.com> XiRCON is an IRC client that appeals to users of
all skill levels. Instantly usable, endlessly configurable. A security
vulnerability in the product allows remote attackers to cause a denial of
service attack against the product by sending it arbitrarily long buffers.

DETAILS

Vulnerable systems:
 * XiRCON version 1.0 Beta 4

By issuing any of the following commands to a remote host using XiRCON:
/ctcp [nickname] [471b]
/privmsg [nickname] [473b]
/msg [channel] [473b]
/notice [nickname] [473b]

Where the second value is the length of the buffer sent, it is possible to
cause a denial of service of the client, effectively rendering it in
operable.

ADDITIONAL INFORMATION

The information has been provided by <mailto:grey_1999@mail.ru> D4rkGr3y.

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