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Category:   Application (Generic)  >   StarOffice Vendors:   Sun
(Sun Issues Fix for StarOffice) OpenSSL RSA Signatures Can Be Forged
SecurityTracker Alert ID:  1024582
SecurityTracker URL:
CVE Reference:   CVE-2006-4339   (Links to External Site)
Date:  Oct 15 2010
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in OpenSSL. A remote user may be able to forge certain digital signatures. Sun StarOffice 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.

Impact:   A remote user may be able to forge signatures (and certificates).
Solution:   Sun has issued a fix for StarOffice, which is affected by this vulnerability.

The Sun advisory is available at:

Cause:   Authentication error
Underlying OS:  Linux (Any), UNIX (macOS/OS X), UNIX (Solaris - SunOS), Windows (Any)

Message History:   This archive entry is a follow-up to the message listed below.
Sep 5 2006 OpenSSL RSA Signatures Can Be Forged

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