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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
OpenSSL EVP_PKEY_verify_recover() May Cause Improper Key Validation
SecurityTracker Alert ID:  1024052
SecurityTracker URL:  http://securitytracker.com/id/1024052
CVE Reference:   CVE-2010-1633   (Links to External Site)
Date:  Jun 2 2010
Impact:   Modification of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.0 only
Description:   A vulnerability was reported in OpenSSL. A remote or local user may be able to bypass key validation in certain cases.

The EVP_PKEY_verify_recover() function may fail to return the proper error code when verification recovery fails for RSA keys. Applications that use the vulnerable function may incorrectly validate an invalid key.

The OpenSSL utility application 'pkeyutl' uses the vulnerable function and is affected.

Peter-Michael Hager reported this vulnerability.

Impact:   A user may be able to bypass key validation.
Solution:   The vendor has issued a fix (1.0.0a).

The vendor's advisory is available at:

http://www.openssl.org/news/secadv_20100601.txt

Vendor URL:  www.openssl.org/news/secadv_20100601.txt (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


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