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Vulnerability of Novell Netware: buffer overflow of CIFS.NLM

Synthesis of the vulnerability 

An attacker can generate a buffer overflow in the CIFS service of Netware, in order to create a denial of service, and possibly to execute code.
Vulnerable software: Netware.
Severity of this announce: 3/4.
Creation date: 17/06/2010.
Références of this computer vulnerability: 5076512, BID-40908, SS-2010-006, VIGILANCE-VUL-9715.

Description of the vulnerability 

The CIFS.NLM module implements the CIFS/SMB service for Novell Netware.

The Session Setup AndX message is used to send the login (AccountName) and the password to the CIFS server. However, CIFS.NLM does not check the size of the AccountName field, which creates a buffer overflow.

An attacker can therefore generate a buffer overflow in the CIFS service of Netware, in order to create a denial of service, and possibly to execute code.
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This computer vulnerability alert impacts software or systems such as Netware.

Our Vigil@nce team determined that the severity of this computer threat alert is important.

The trust level is of type confirmed by the editor, with an origin of intranet client.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this security vulnerability.

Solutions for this threat 

Novell Netware: patch for CIFS.NLM.
A patch (N65NSS8c.zip) is available:
  http://download.novell.com/Download?buildid=tMWCI1cdI7s~
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