Resource file path traversal in IconDownloadResourceManager

To reproduce: 1. Create a new page title doesn't matter. 2. Insert an image with URL: code:none /confluence/images/icons/profilepics/../../../WEB-INF/classes/crowd.properties code with /confluence/ replaced with the correct base path. Edit the page, click +, click Image, select the From the Web...

Resource file path traversal in IconDownloadResourceManager

To reproduce: 1. Create a new page title doesn't matter. 2. Insert an image with URL: code:none /confluence/images/icons/profilepics/../../../WEB-INF/classes/crowd.properties code with /confluence/ replaced with the correct base path. Edit the page, click +, click Image, select the From the Web...

Resource file path traversal in IconDownloadResourceManager

To reproduce: 1. Create a new page title doesn't matter. 2. Insert an image with URL: code:none /confluence/images/icons/profilepics/../../../WEB-INF/classes/crowd.properties code with /confluence/ replaced with the correct base path. Edit the page, click +, click Image, select the From the Web...