CVE-2015-20128: FooSun DotNetCMS 1.0 / 2.0 SQL Injection via City_ajax.aspx
FooSun DotNetCMS 1.0 and 2.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate MSSQL queries through the CityId parameter. Attackers can send GET requests to /user/Cityajax.aspx with UNION SELECT payloads in CityId, concatenated unsanitized into the sysCity query, to extract database information. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Installations of FooSun DotNetCMS 1.0 or 2.0 that expose /user/City_ajax.aspx over the network are exposed. The vulnerable CityId parameter can be reached with a GET request.
What does an attacker need to exploit it?
No authentication or user interaction is required. An attacker needs network access to the endpoint and can submit a UNION SELECT SQL injection payload through the CityId parameter.
What could an attacker obtain?
The described exploitation method can extract database information by manipulating the MSSQL query used by the sys_City lookup. The reported impact includes high confidentiality impact and low integrity impact.
How can I check for attempted exploitation?
Review web-server and application logs for GET requests to /user/City_ajax.aspx with suspicious CityId values, especially values containing UNION SELECT payloads. Exploitation evidence was observed in the wild on 2023-10-14.