[jira] [Resolved] (BATIK-1139) SSRF through external DTD resolution

classic Classic list List threaded Threaded
1 message Options
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

[jira] [Resolved] (BATIK-1139) SSRF through external DTD resolution

JIRA jira@apache.org

     [ https://issues.apache.org/jira/browse/BATIK-1139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

simon steiner resolved BATIK-1139.
----------------------------------
    Resolution: Fixed

> SSRF through external DTD resolution
> ------------------------------------
>
>                 Key: BATIK-1139
>                 URL: https://issues.apache.org/jira/browse/BATIK-1139
>             Project: Batik
>          Issue Type: Bug
>          Components: SVG Rasterizer
>    Affects Versions: 1.8
>            Reporter: Lars Krapf
>            Assignee: Glenn Adams
>             Fix For: trunk
>
>         Attachments: ssrf.svg
>
>
> The fix for XXE (BATIK-1018) seems to be incomplete.
> External DTD resolution should also be disabled in order to avoid attacks like SSRF or port-scanning behind the firewall.
> See attached file (ssrf.svg) for an example.
> {code}
> chaotic@m0lly:~$ nc -l 2323
> GET / HTTP/1.1
> User-Agent: Java/1.7.0_60-ea
> Host: localhost:2323
> Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
> Connection: keep-alive
> {code}
> To fix it you could disable the external DTD resolution altogether, using the document factory configuration, i.e.
> {code}
> dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
> {code}
> See also https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Processing for more information on XXE.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: [hidden email]
For additional commands, e-mail: [hidden email]

Loading...