Macromedia JRun Administration Server allows remote attackers to bypass authentication on the login form via an extra slash (/) in the URL.

Allaire JRun 2.3.3, 3.0 and 3.1 running on IIS 4.0 and 5.0, iPlanet, Apache, JRun web server (JWS), and possibly other web servers allows remote attackers to read arbitrary files and directories by appending (1) "%3f.jsp", (2) "?.jsp" or (3) "?" to the requested URL.

Macromedia JRun 3.0 and 3.1 allows remote attackers to obtain duplicate active user session IDs and perform actions as other users via a URL request for the web application directory without the trailing '/' (slash), as demonstrated using ctx.

Directory traversal vulnerability in Macromedia JRun Web Server (JWS) 2.3.3, 3.0 and 3.1 allows remote attackers to read arbitrary files via a .. (dot dot) in the HTTP GET request.

Macromedia JRun 3.0 and 3.1 appends the jsessionid to URL requests (a.k.a. rewriting) when client browsers have cookies enabled, which allows remote attackers to obtain session IDs and hijack sessions via HTTP referrer fields or sniffing.

Unknown vulnerability in Allaire JRun 3.1 allows remote attackers to directly access the WEB-INF and META-INF directories and execute arbitrary JavaServer Pages (JSP), a variant of CVE-2000-1050.

JRun 3.0 and 3.1 running on JRun Web Server (JWS) and IIS allows remote attackers to read arbitrary JavaServer Pages (JSP) source code via a request URL containing the source filename ending in (1) "jsp%00" or (2) "js%2570".

SSIFilter in Allaire JRun 3.1, 3.0 and 2.3.3 allows remote attackers to obtain source code for Java server pages (.jsp) and other files in the web root via an HTTP request for a non-existent SSI page, in which the request's body has an #include statement.