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Vulnerability Note VU#912505

Novell NetMail NMAP vulnerable to buffer overflow when processing "STOR" commands

Overview

A vulnerability in the way Novell NetMail handles NMAP "STOR" commands may cause a buffer overflow that may allow remote execution of arbitrary code.

I. Description

Novell NetMail's implementation of the Network Messaging Application Protocol (NMAP) contains a buffer overflow that may occur when processing parameters supplied to the "STOR" command. An attacker must login to an affected system in order to take advantage of this vulnerability. The vulnerable daemon, nmapd.exe, binds to port 689/tcp.

II. Impact

A remote, authenticated attacker may be able to execute arbitrary code or cause a denial-of-service condition.

III. Solution

Update

Novell has released an update to address this issue. See Novell document 3096026 for more details.

Block port 689/tcp

As a workaround, system administrators can use a firewall to block port 689/tcp at an appropriate network border, thus preventing external attackers from accessing the vulnerable nmapd.exe daemon. Note that this will not prevent an attack from within the local network.

Systems Affected

VendorStatusDate NotifiedDate Updated
Novell, Inc.Vulnerable15-Jan-2007

References


https://secure-support.novell.com/KanisaPlatform/Publishing/134/3096026_f.SAL_Public.html
http://secunia.com/advisories/23437/
http://www.zerodayinitiative.com/advisories/ZDI-06-052.html

Credit

This issue is addressed in Novell document 3096026. Novell credits Dennis Rand of CIRT.DK working with TippingPoint and the Zero Day Initiative for reporting this issue.

This document was written by Chris Taschner.

Other Information

Date Public:2006-12-23
Date First Published:2007-01-17
Date Last Updated:2007-01-19
CERT Advisory: 
CVE-ID(s):CVE-2006-6424
NVD-ID(s):CVE-2006-6424
US-CERT Technical Alerts: 
Metric:5.49
Document Revision:12

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