(Sun Issues Fix for Java) OpenSSL RSA Signatures Can Be Forged
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SecurityTracker Alert ID: 1016969 |
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SecurityTracker URL: http://securitytracker.com/id/1016969
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CVE Reference:
CVE-2006-4339
(Links to External Site)
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Date: Oct 3 2006
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Impact:
Modification of user information
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to JRE 5.0 Update 9
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Description:
A vulnerability was reported in OpenSSL. A remote user may be able to forge certain digital signatures. Sun JRE is affected.
If an RSA key with exponent 3 is used, a remote user may be able to forge a PKCS #1 v1.5 signature for that key.
Software that uses PKCS #1 v1.5 may be affected. Software that uses OpenSSL to verify X.509 certificates may also be affected.
Daniel Bleichenbacher reported the type of attack that is possible against PKCS #1 v1.5 signatures.
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Impact:
A remote user may be able to forge signatures (and certificates).
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Solution:
Sun has issued a fix for JRE, which is affected by the OpenSSL vulnerability. The fix available at:
http://java.sun.com/j2se/1.5.0/download.jsp
* JDK and JRE 5.0 Update 9 and later (for Windows, Solaris, and Linux)
A fix for SDK and JRE 1.4.2 and 1.3.1, and for JSSE 1.0.3, will be issued in upcoming update releases.
The Sun advisory is available at:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102648-1
[Editor's note: Sun reports that several other Sun products are affected and that separate Sun Alerts will be issued for each affected product.]
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Vendor URL: www.openssl.org/news/secadv_20060905.txt (Links to External Site)
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Cause:
Authentication error
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Underlying OS:
Linux (Any), UNIX (Solaris - SunOS), Windows (Any)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 2 Oct 2006 23:38:56 -0400
Subject: Security Vulnerability in RSA Signature Verification Impacting Multiple SUN Products
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http://sunsolve.sun.com/search/document.do?assetkey=1-26-102648-1
CVE-2006-4339
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