404 page as a result of double-encoded slashes in the URL when using Apache
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
You have placed an Apache server in front of Bamboo or other applications for redirection. Trying to access your application with a URL such as http://myhost.domain/bamboo you got redirected to https://myhost.mydomain/bamboo/userlogin!default.action?os_destination=%252Fstart.action :
Result:
Page not Found
The requested URL /bamboo//start.action was not found on this server.
Cause
The Character %252F is double encoded / and %2F is single encoded /. So that means that the last segment of the URL os_destination=%252Fstart.action has an additional slash which does not exist. There is a bug report regarding the additional slash that is being tracked with Apache at https://issues.apache.org/bugzilla/show_bug.cgi?id=39746
Resolution
Add [NE] flag to one of the global rewrite rules that redirect everything that goes to your Bamboo server. Your httpd config file should have something like
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RewriteRule /(.*) http://localhost:8085/$1 [NE,P,L]
ProxyPassReverse / http://localhost:8085/Was this helpful?