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Category:   Application (Security)  >   IBM Security AppScan Vendors:   IBM
(IBM Issues Fix for IBM Security AppScan Source) cURL/libcurl TLS Connection Reuse Bug Lets Remote Users Bypass Security Restrictions on the Target System
SecurityTracker Alert ID:  1037740
SecurityTracker URL:
CVE Reference:   CVE-2016-5420   (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,,,,,
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 reuse a TLS connection with the incorrect client certificate. As a result, an application may send requests to the wrong target realm using the incorrect authentication method.

The command line tool is also affected.

Impact:   A remote user may be able to access data sent via a re-used TLS connection with the wrong or missing client certificate.
Solution:   IBM has issued a fix for IBM Security AppScan Source (PSIRT9-iFix).

The IBM advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control 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 Connection Reuse Bug Lets Remote Users Bypass Security Restrictions on the Target System

 Source Message Contents

[Original Message Not Available for Viewing]

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