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https://issues.apache.org/jira/browse/CXF-8454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17361440#comment-17361440
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Colm O hEigeartaigh commented on CXF-8454:
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[~Svorc] - Do you want a credit in the advisory for this? If so please let me
know ASAP the full text.
> DOS vulnerability in bearer token parsing
> -----------------------------------------
>
> Key: CXF-8454
> URL: https://issues.apache.org/jira/browse/CXF-8454
> Project: CXF
> Issue Type: Bug
> Components: JAX-RS Security
> Affects Versions: 3.4.3
> Reporter: Martin
> Assignee: Colm O hEigeartaigh
> Priority: Major
> Fix For: 3.4.4, 3.3.11
>
> Attachments: cxf-bearer-dos.zip, stacktrace.txt
>
>
> I stumbled upon this vulnerability when I accidentaly copied the following
> shortened Base64 bearer token from Firefox console (notice the "…" character):
> {{eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICIyZ3RYd0FMb2h6ekNYTkFaYjBLbGFDVUtnQ01xMi0wUlFiNkVRYWFSeGE0In0.eyJleHAiOjE2MTc3MTA3MDgsImlhdCI6MTYxNzcxMDQwOCwiYXV0aF90aW1lIjoxNjE3NzEwNDA2LCJqdGkiOiJlMjEzZjY2Ni00Y2ZjLTQ4ZWItOTcxZi03NzEyMzA5YWYyZjYiLCJpc3MiOiJodHRwczovL3BnZGV2LnNlZmlyYS5jei9hdXRoL3JlYWxtcy9kZWZhdWx0IiwiYXVkIjpbIm9iZWxpc2stc3AtYXBpIiwiYWNjb3VudCJdLCJzdWIiOiI3NDYxYWUzNy05ODAxLTQ2MGQtODkwYS1lMTY0ZjUyM2Y4NzIiLCJ0eXAiOiJCZWFyZXIiLCJhenAiOiJvYmVsaXNrLXNwLWd1aSIsIm5vbmNlIjoiYTIwZmM1ZTUtZTVmZ…hbCIsInByZWZlcnJlZF91c2VybmFtZSI6InRlc3QiLCJnaXZlbl9uYW1lIjoiS2F6aXN2xJt0IE9zbcO9IiwiZmFtaWx5X25hbWUiOiJ6IEJvxb7DrSB2xa9sZSBrcsOhbCIsImVtYWlsIjoidGVzdEBzZWZpcmEuY3p4In0.oyOijY0OluxSzqsaZtTwH3_kl327jCziXQcFRpsoPpCqTXbwQmn4s4_75ov83iwVVi_tohaVniof_Y80IaMz62jzzJvr5HZNzFPjXbHMO4W4Wgp2HwtRJBDIIfpMvhyR6OYQfSmNl7Ie-1X5ij7PTeMO5qUH_U725NdzSLwz3A8DC7JAgpWdUJxJHbAUYtqoyOHHM8IYpzq0yGU0Zq3LS7EqN-mH3s4OqzTgcgXL7T7bpybTyjOF7e3GLQt9tn9E9Ch3ZPP9MtsVRQ8sJZRo1q-kZBQDSPkiCw0o-pOeVxzXy5LvSkFPLTp73ab2H0V08xKzQSKpjYOx9XKc8yzqkA}}
> Invoking a service secured by OAuthRequestFilter results in the thread
> getting stuck in an infinite loop, consuming CPU indefinitely. This seems to
> be a result of lenient parsing of both Base64 and JSON. I put together a
> minimal Maven project which can be used to reproduce the behavior by invoking
> the following cURL:
> {{curl -v -H "Authorization: Bearer [token above]"
> [http://localhost:8080/services/myapp/hello]}}
> I also attach the stack trace of the thread getting stuck.
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