Hello, I found this MarkLogic post interesting, So I forward it to the BaseX users. I do not remember loading data I did not trust, but did somebody experience this kind of issue ?
Best regards, Fabrice Etanchaud De : [email protected] [mailto:[email protected]] De la part de Marcel de Kleine Envoyé : mercredi 14 mars 2018 13:43 À : [email protected] Objet : [MarkLogic Dev General] Marklogic XXE and XML Bomb prevention Hello, We have noticed Marklogic is vulnerable to xxe (entity expansion) and xml bomb attacks. When loading an malicious document using xdmp:document-insert it won't catch these and cause either loading of unwanted external documents (xxe) and lockup of the system (xml bomb). For example, if I load this document : <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [ <!ELEMENT foo ANY > <!ENTITY xxe SYSTEM "file:///c:/text.xml<file:///c:\text.xml>" >]> <foo>&xxe;</foo> The file test.xml gets nicely added to the xml document. See OWASP and others for examples. This is clearly a xml processing issue so the question is : can we disable this? And if so, on what levels would this be possible. Best should be system-wide. ( And if you cannot disable this, I think this is something ML should address immediately. Thank you in advance, Marcel de Kleine, EPAM Marcel de Kleine Senior Software Engineer Office: +31 20 241 6134 x 30530<tel:+31%2020%20241%206134;ext=30530> Cell: +31 6 14806016<tel:+31%206%2014806016> Email: [email protected]<mailto:[email protected]> Delft, Netherlands epam.com<http://www.epam.com> CONFIDENTIALITY CAUTION AND DISCLAIMER This message is intended only for the use of the individual(s) or entity(ies) to which it is addressed and contains information that is legally privileged and confidential. If you are not the intended recipient, or the person responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. All unintended recipients are obliged to delete this message and destroy any printed copies.
