Advisory by Netsparker.
Name: SQL Injection Vulnerability in TestLink 1.9.13
Affected Software : TestLink
Affected Versions: and possibly below
Vendor Homepage : 
Vulnerability Type : SQL Injection
Severity : Critical
Status : Fixed
CVE-ID : CVE-2015-7390
Netsparker Advisory Reference : NS-15-015

If your web application is vulnerable to SQL injection, a hacker is able to execute any malicious SQL query or command through the web application.

Technical Details
Proof of Concept URLs for SQL Injection vulnerability in TestLink:

Page: lnl.php
Parameter Name: apikey
Parameter Type: GET
Attack Pattern: '+(SELECT 1 FROM (SELECT SLEEP(25))A)+'

For more information on SQL Injection vulnerabilities read the article SQL Injection.

Advisory Timeline
15/09/2015 - First Contact
02/10/2015 - Vendor Fixed
05/10/2015 - Advisory Released


Credits & Authors
These issues have been discovered by Omar Kurt while testing Netsparker Web Application Security Scanner.

About Netsparker
Netsparker web application security scanners find and report security flaws and vulnerabilities such as SQL Injection and Cross-site Scripting (XSS) in all websites and web applications, regardless of the platform and technology they are built on. Netsparker scanning engine's unique detection and exploitation techniques allow it to be dead accurate in reporting vulnerabilities, hence it does not report any false positives. The Netsparker web application security scanner is available in two editions; Netsparker Desktop and Netsparker Enterprise. Visit our website for more information.