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AUSCERT External Security Bulletin Redistribution
ESB-2000.342 -- CERT Advisory CA-2000-19
Revocation of Sun Microsystems Browser Certificates
14 November 2000
AusCERT Security Bulletin Summary
Product: Browser Certificates
Vendor: Sun Microsystems
Impact: Provide Misleading Information
Execute Arbitrary Code/Commands
Access Required: Remote
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CERT Advisory CA-2000-19 Revocation of Sun Microsystems Browser Certificates
Original release date: October 25, 2000 13:39:00 EDT
Last revised: October 25, 2000 14:12:23 EDT
Source: Sun Microsystems; CERT/CC
A complete revision history is at the end of this file.
* Systems relying on the validity of the Sun Microsystems
certificates mentioned below
To aid in the wide distribution of essential security information,
the CERT Coordination Center is forwarding the following
information from Sun Microsystems. Sun urges you to act on this
information as soon as possible. Contact information for the Sun
security team can be found in their bulletin, which is referenced
in the vendor appendix to this document.
The description below is an excerpt from Sun Security Bulletin 198.
The original text can be found here.
Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00198
Date: October 24, 2000
Title: Browser Certificates
1. Bulletin Topics
Sun advises of a potential compromise of 2 specific security
certificates which had limited distribution. Sun recommends
that you follow the directions found at
determine if your web browser has accepted any of the
potentially compromised certificates.
2. Who is Affected
A web browser that has accepted a Sun certificate with one the
following serial numbers:
3181 B12D C422 5DAC A340 CF86 2710 ABE6 (Internet Explorer)
3. Understanding the Vulnerability
Web browsers accept security certificates from trusted
sources. A specific certificate from Sun may have received
outside exposure. Systems that encounter this certificate are
potentially vulnerable to attack from malicious applets,
applications or components.
4. Corrective Action
Follow the instructions at
determine if your browser has accepted one of the potentially
compromised certificates. If your browser contains this
particular certificate, follow the instructions to remove it.
Additional information from the CERT/CC
Sun Microsystems has revoked the certificates with the following
3181 B12D C422 5DAC A340 CF86 2710 ABE6
1705 FB13 A22F 9AF3 C130 F562 6E12 504C
You can confirm the revocation of these certificates at
Users who accept these certificates into their browser may
inadvertently run malicious code signed by the compromised
certificates. Any such code would appear to be from Sun
Microsystems, thus creating a misleading sense of trust.
Remove the Compromised Certificates
Sun Microsystems has provided identification information for the
compromised certificates as well as instructions on how to
remove them from common browsers. Users should follow Sun's
instructions to remove these certificates from their browser and
to prevent possible future addition.
Appendix A. Vendor Information
Sun's official copy of their bulletin can be found at:
The CERT Coordination Center thanks Sun Microsystems for bringing this
issue to our attention.
Author: The CERT/CC portions of this document were written by
Jeffrey P. Lanza. Feedback on this advisory is appreciated.
This document is available from:
CERT/CC Contact Information
Phone: +1 412-268-7090 (24-hour hotline)
Fax: +1 412-268-6989
CERT Coordination Center
Software Engineering Institute
Carnegie Mellon University
Pittsburgh PA 15213-3890
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Any material furnished by Carnegie Mellon University and the Software
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Copyright 2000 Carnegie Mellon University.
October 25, 2000: Initial release
October 25, 2000: Updated author section and references to Sun Security Bulletin 198.
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