Vulnerability Note VU#258555

OpenSSL clients contain a buffer overflow 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 clients that could lead to the execution of arbitrary code on the client's system.


OpenSSL clients using SSLv3 prior to version 0.9.6e and pre-release version 0.9.7-beta2 contain a buffer overflow vulnerability. A malicious server can exploit this by sending a large session ID to the client during the handshake process.


A remote attacker may be able to execute arbitrary code on the client system with the privileges of the current user.


Apply the relevant patches to the OpenSSL client 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
AlcatelAffected29 Jul 200220 Sep 2002
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
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 and Jeffrey S. Havrilla.

Other Information

  • CVE IDs: CAN-2002-0656
  • CERT Advisory: CA-2002-23
  • Date Public: 30 Jul 2002
  • Date First Published: 30 Jul 2002
  • Date Last Updated: 30 Sep 2002
  • Severity Metric: 3.19
  • Document Revision: 37


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