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Category:   Application (Security)  >   Novell NetIQ Access Manager Vendors:   Novell
(Novell Issues Fix for NetIQ Access Manager) OpenSSL Alternative Certificate Chain Validation Flaw Lets Remote Users Forge Certificates
SecurityTracker Alert ID:  1032979
SecurityTracker URL:  http://securitytracker.com/id/1032979
CVE Reference:   CVE-2015-1793   (Links to External Site)
Date:  Jul 18 2015
Impact:   Modification of authentication information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.0, 4.1
Description:   A vulnerability was reported in OpenSSL. A remote user can bypass certificate validation on the target system. NetIQ Access Manager is affected.

When the validation of a certificate chain fails, the system attempts to validate an alternate certificate chain but does not check the CA flag of untrusted certificates. As a result, a remote user can cause the target system to validate an invalid certificate using a valid leaf certificate.

Applications that verify certificates are affected.

SSL/TLS/DTLS clients and SSL/TLS/DTLS servers using client authentication are affected.

The vendor was notified on June 24, 2015.

Adam Langley/David Benjamin (Google/BoringSSL) reported this vulnerability.

Impact:   A remote user can bypass certificate validation on the target system.
Solution:   Novell has issued an advisory for NetIQ Access Manager that provides instructions to fix the vulnerability.

The Novell advisory is available at:

https://www.novell.com/support/kb/doc.php?id=7016693

Vendor URL:  openssl.org/news/secadv_20150709.txt (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (SuSE), Windows (2003)

Message History:   This archive entry is a follow-up to the message listed below.
Jul 9 2015 OpenSSL Alternative Certificate Chain Validation Flaw Lets Remote Users Forge Certificates



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