Unify的eWave ServletExec拒绝服务漏洞 _MySQL
Jun 01, 2016 pm 02:07 PM拒绝服务servlet
涉及程序:
eWave ServletExec
描述:
Unify的eWave ServletExec拒绝服务漏洞
详细:
Unify的eWave ServletExec是一个JSP和Java Servlet引擎,它们被用作象Apache、IIS、Netscape等等流行的网络服务器的插件。
发送一个URL请求可能引起ServletExec servlet引擎突然终止,但是web服务器不会受到影响。
可以通过在URL前加上servlet路径前缀“/servlet”这样可以强制调用任意的servlet。一个名为“ServletExec”的servlet存在于服务端。
强制执行“ServletExec”servlet将导致servlet引擎初始化并试图在80口上绑定一个服务器线程。如果服务器已经运行,端口绑定操作将导致servlet引擎异常终止。
例如,如果ServletExec作为80端口上的web服务器插件运行在10.0.0.1上,攻击者可打开一个80端口的连接,发出如下的GET请求使servlet引擎异常终止。
nc 10.0.0.1 80
GET /servlet/ServletExec HTTP/1.0
或者从浏览器中存取URL:http://10.0.0.1/servlet/ServletExec 也能达到相同的效果。
日志文件中将记录如下内容:
Received an exception when starting ServletExec:
java.net.BindException:
Address in use: bind
受影响的系统:
Unify eWave ServletExec 3.0C
解决方案:
升级到 ServletExec 3.0E 版本:
http://www.servletexec.com/downloads/

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