Vulnerability Note VU#869184

Oracle Internet Directory contains multiple vulnerabilities in LDAP handling code

Original Release date: 16 Jul 2001 | Last revised: 12 Dec 2002

Overview

The Oracle Internet Directory server 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.

Description

The Oracle Internet Directory server contains multiple vulnerabilities in the code used to process LDAP requests.

In the encoding section of the test suite, this product failed an indeterminate number of test cases in the group that tests a server's response to invalid encodings of BER OBJECT-IDENTIFIER values.

In the application section of the test suite, this product failed 46 of 77 groups. These results suggest that both buffer overflow and format string vulnerabilities are likely to be present in a variety of application components.

Impact

One or more of these vulnerabilities allow a remote attacker to execute arbitrary code with the privileges of the Oracle server. The server typically runs with system privileges. At least one of these vulnerabilities has been successfully exploited in a laboratory environment.

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 (Learn More)

VendorStatusDate NotifiedDate Updated
OracleAffected06 Apr 200112 Dec 2002
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

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

  • CVE IDs: CAN-2001-0974
  • CERT Advisory: CA-2001-18
  • Date Public: 16 Jul 2001
  • Date First Published: 16 Jul 2001
  • Date Last Updated: 12 Dec 2002
  • Severity Metric: 41.90
  • Document Revision: 33

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