Vulnerability Note VU#688960

Teamware Office contains multiple vulnerabilities in LDAP handling code

Overview

The Teamware Office suite contains vulnerabilities that may allow denial-of-service attacks, unauthorized privileged access, or both. These vulnerabilities were revealed using the PROTOS LDAPv3 test suite and are documented in CERT Advisory CA-2001-18. If your site uses this product, the CERT/CC encourages you to follow the advice provided below.

I. Description

The Teamware Office suite is packaged with a combination X.500/LDAP server that provides directory services. Multiple versions of the Office product contain vulnerabilities that cause the LDAP server to crash in response to traffic sent by the PROTOS LDAPv3 test suite.

In the encoding section of the test suite, this product failed 9 of 16 groups involving invalid encodings for several BER object types.

In the application section of the test suite, this product failed 4 of 32 groups. The remaining 45 groups were not exercised during the test runs. The four failed groups indicate the presence of buffer overflow vulnerabilities.

II. Impact

These vulnerabilities allow a remote attacker to crash affected Teamware LDAP servers, resulting in a denial-of-service condition. They may also allow a remote attacker to execute arbitrary code with the privileges of the Teamware server. The server typically runs with system privileges.

III. Solution

Apply a patch from your vendor

Please consult the Systems Affected section for vendor-specific information on addressing this vulnerability.

Block access to directory services at network perimeter

As a temporary measure, it is possible to limit the scope of these vulnerabilities by blocking access to directory services at the network perimeter. Please note that this workaround does not protect vulnerable products from internal attacks.

ldap 389/tcp # Lightweight Directory Access Protocol
ldap 389/udp # Lightweight Directory Access Protocol
ldaps 636/tcp # ldap protocol over TLS/SSL (was sldap)
ldaps 636/udp # ldap protocol over TLS/SSL (was sldap)

Systems Affected

Vendor	Status	Date Notified	Date Updated
Teamware	Vulnerable	16-Jul-2001

References

http://www.ee.oulu.fi/research/ouspg/protos/testing/c06/ldapv3/
http://www.securityfocus.com/bid/3044
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-1316
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-1317
http://ciac.llnl.gov/ciac/bulletins/l-116.shtml
http://xforce.iss.net/static/6897.php

Credit

The CERT Coordination Center thanks the Oulu University Secure Programming Group for reporting these vulnerabilities to us, for their detailed technical analyses, and for their assistance in preparing this document.

This document was written by Jeffrey P. Lanza.

Other Information

Date Public:	2001-07-16
Date First Published:	2001-07-16
Date Last Updated:	2002-12-12
CERT Advisory:	CA-2001-18
CVE-ID(s):	CAN-2001-1316
NVD-ID(s):	CAN-2001-1316
US-CERT Technical Alerts:
Metric:	3.72
Document Revision:	36

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Get Adobe Reader