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Category:   Application (Security)  >   IBM Security AppScan Vendors:   IBM
(IBM Issues Fix for IBM Security AppScan Source) cURL/libcurl TLS Session Resumption Client Certificate Bug Lets Remote Users Bypass Security Restrictions on the Target System
SecurityTracker Alert ID:  1037739
SecurityTracker URL:  http://securitytracker.com/id/1037739
CVE Reference:   CVE-2016-5419   (Links to External Site)
Date:  Jan 31 2017
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Source 9.0.1, 9.0.2, 9.0.3, 9.0.3.1, 9.0.3.2, 9.0.3.3, 9.0.3.4, 9.0.3.5
Description:   A vulnerability was reported in cURL/libcurl. A remote user can bypass security controls on the target system. IBM Security AppScan Source is affected.

The library may resume using a TLS session when the client certificate has changed. As a result, an application may be able to send data using incorrect authentication data.

The command line tool is also affected.

Bru Rom reported this vulnerability.

Impact:   An application may be able to send data using incorrect authentication data.
Solution:   IBM has issued a fix for IBM Security AppScan Source (PSIRT9-iFix).

The IBM advisory is available at:

http://www-01.ibm.com/support/docview.wss?uid=swg21997845

Vendor URL:  www-01.ibm.com/support/docview.wss?uid=swg21997845 (Links to External Site)
Cause:   Authentication error, State error
Underlying OS:  Linux (Any), UNIX (macOS/OS X), Windows (Any)

Message History:   This archive entry is a follow-up to the message listed below.
Aug 4 2016 cURL/libcurl TLS Session Resumption Client Certificate Bug Lets Remote Users Bypass Security Restrictions on the Target System



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