Vulnerability Note VU#102795
OpenSSL servers contain a buffer overflow during the SSL2 handshake process
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 server.
Description
Versions of OpenSSL servers prior to 0.9.6e and pre-release version 0.9.7-beta2 contain a remotely exploitable buffer overflow vulnerability. This vulnerability can be exploited by a client using a malformed key during the handshake process with an SSL server connection using the SSLv2 communication process. |
Impact
Exploitation of this vulnerability could lead to the execution of arbitrary code on the server. The code will be executed with the privileges of the application or service exploited via this vulnerability. |
Solution
OpenSSL servers 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. |
Servers can disable SSL2 or disable all applications using SSL or TLS until the patches are applied. |
Systems Affected
| Vendor | Status | Date Notified | Date Updated |
|---|---|---|---|
| Apache | Unknown | 30 Jul 2002 | 30 Sep 2002 |
| Apache-SSL | Unknown | 29 Jul 2002 | 30 Sep 2002 |
| Apple Computer Inc. | Vulnerable | 29 Jul 2002 | 30 Sep 2002 |
| Covalent | Vulnerable | 30 Jul 2002 | 30 Sep 2002 |
| Debian | Vulnerable | 29 Jul 2002 | 30 Sep 2002 |
| Gentoo Linux | Vulnerable | - | 30 Sep 2002 |
| Guardian Digital | Vulnerable | 29 Jul 2002 | 30 Sep 2002 |
| Hewlett-Packard Company | Vulnerable | 29 Jul 2002 | 30 Sep 2002 |
| IBM | Vulnerable | 29 Jul 2002 | 30 Sep 2002 |
| Inktomi Corporation | Not Vulnerable | - | 30 Sep 2002 |
| Juniper Networks | Vulnerable | - | 30 Sep 2002 |
| Lotus Development Corporation | Not Vulnerable | 29 Jul 2002 | 30 Sep 2002 |
| MandrakeSoft | Vulnerable | - | 30 Sep 2002 |
| Microsoft Corporation | Not Vulnerable | - | 30 Sep 2002 |
| NCSA | Unknown | 30 Jul 2002 | 30 Sep 2002 |
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/258555
- http://www.kb.cert.org/vuls/id/308891
- http://www.kb.cert.org/vuls/id/561275
- http://www.kb.cert.org/vuls/id/748355
- http://www.securityfocus.com/bid/5363
Credit
The CERT/CC thanks Greg Shipley of Neohapsis for reporting this issue to us. John McDonald <jm@neohapsis.com> is credited for discovering this issue. It was also found independently by A.L. Digital Ltd.
This document was written by Jason A Rafail.
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: 17.63
- Document Revision: 37
Feedback
If you have feedback, comments, or additional information about this vulnerability, please send us email.
This product is provided subject to the Notification as indicated here: http://www.us-cert.gov/legal.html#notify
