directory.php in AJchat 0.10 allows remote attackers to bypass input validation and conduct SQL injection attacks via a numeric parameter with a value matching the s parameter's hash value, which prevents the associated $_GET["s"] variable from being unset. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in AJChat.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
| Link | Tags |
|---|---|
| https://www.exploit-db.com/exploits/4890 | exploit |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/39600 | vdb entry |
| http://www.securityfocus.com/bid/27241 | vdb entry exploit |