Vulnerability Note VU#561275

Overview

OpenSSL is an open-source implementation of the Secure Sockets Layer (SSL) protocol. A remotely exploitable vulnerability exists in OpenSSL servers that could lead to the execution of arbitrary code on the system

Description

Servers running OpenSSL pre-release version 0.9.7 with Kerberos enabled, contain a remotely exploitable buffer overflow vulnerability. This vulnerability can be exploited by a malicious client sending a malformed key during the SSLv3 handshake process with the server.

Impact

A remote attacker may be able to execute arbitrary code on the server with the privileges of the exploited application or service.

Solution

OpenSSL Clients should apply the patches provided by your vendors, or upgrade to OpenSSL 0.9.6e. Note that applications statically linking to OpenSSL libraries may need to be recompiled with the corrected version of OpenSSL.

Systems Affected (Learn More)

Vendor	Status	Date Notified	Date Updated
Apple Computer Inc.	Affected	29 Jul 2002	09 Aug 2002
Debian	Affected	29 Jul 2002	09 Aug 2002
Gentoo Linux	Affected	-	09 Aug 2002
Guardian Digital	Affected	29 Jul 2002	09 Aug 2002
Hewlett-Packard Company	Affected	29 Jul 2002	09 Aug 2002
IBM	Affected	29 Jul 2002	09 Aug 2002
Juniper Networks	Affected	29 Jul 2002	16 Aug 2002
MandrakeSoft	Affected	-	23 Sep 2002
NetBSD	Affected	29 Jul 2002	23 Sep 2002
OpenLDAP	Affected	29 Jul 2002	09 Aug 2002
OpenPKG	Affected	-	09 Aug 2002
OpenSSL	Affected	22 Jul 2002	30 Jul 2002
Oracle	Affected	29 Jul 2002	09 Aug 2002
Red Hat Inc.	Affected	29 Jul 2002	09 Aug 2002
Secure Computing Corporation	Affected	-	30 Sep 2002

If you are a vendor and your product is affected, let us know.View More »

CVSS Metrics (Learn More)

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

References

• http://www.kb.cert.org/vuls/id/102795
• http://www.kb.cert.org/vuls/id/258555
• http://www.kb.cert.org/vuls/id/308891
• http://www.kb.cert.org/vuls/id/748355
• http://www.securityfocus.com/bid/5361
• http://www.securityfocus.com/bid/5353

Credit

Thanks to A.L. Digital Ltd for discovering and reporting on this vulnerability.

This document was written by Jason A Rafail.

Other Information

• CVE IDs: CAN-2002-0657
• CERT Advisory: CA-2002-23
• Date Public: 30 Jul 2002
• Date First Published: 30 Jul 2002
• Date Last Updated: 30 Sep 2002
• Severity Metric: 5.88
• Document Revision: 27