Vulnerability Note VU#561275

OpenSSL servers contain a remotely exploitable buffer overflow vulnerability during the SSL3 handshake process

Original Release date: 30 Jul 2002 | Last revised: 30 Sep 2002


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


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.


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


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)

VendorStatusDate NotifiedDate Updated
Apple Computer Inc.Affected29 Jul 200209 Aug 2002
DebianAffected29 Jul 200209 Aug 2002
Gentoo LinuxAffected-09 Aug 2002
Guardian DigitalAffected29 Jul 200209 Aug 2002
Hewlett-Packard CompanyAffected29 Jul 200209 Aug 2002
IBMAffected29 Jul 200209 Aug 2002
Juniper NetworksAffected29 Jul 200216 Aug 2002
MandrakeSoftAffected-23 Sep 2002
NetBSDAffected29 Jul 200223 Sep 2002
OpenLDAPAffected29 Jul 200209 Aug 2002
OpenPKGAffected-09 Aug 2002
OpenSSLAffected22 Jul 200230 Jul 2002
OracleAffected29 Jul 200209 Aug 2002
Red Hat Inc.Affected29 Jul 200209 Aug 2002
Secure Computing CorporationAffected-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



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


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