Difference between revisions of "MediaWiki"

Revision as of 03:09, 23 May 2006

Various MediaWiki 1.6.1 parser tests, that fail HTML validation. These were all found by fuzz testing of MediaWiki, using a modified PHP port of the Python port of mangleme. The source code is available, although the version now in the MediaWiki trunk is probably more current.

• MediaWiki bug report.

Definition of Security Aspects

For the above table, "security aspect" is defined as anything that causes the start of a tag to be missing, or the end to be missing, or attributes of any type that should not be there to be injected. For example:

• <p><td><s></p> would not be considered to have a security aspect because all the tags are appearing ok (are not malformed), although it is invalid HTML.
• <a href="http://as<td></td><td class="external free"><p>user text here would be considered to have a security aspect because the "href" string is not properly terminated, and so the "external free" part is injected as attributes.
• A string missing the start of a tag would also be considered to have a security aspect - e.g. <th>|||||" class="external free" title="https://||||||" rel="nofollow">https://</th> - because the <a href="xxx part has been cut off. Probably not exploitable - but certainly a worse category of bug than just getting tags in the wrong order.

So to sum up: if tags are just in the wrong order, but are otherwise complete and well-formed, then it is not a security issue; otherwise it is considered to potentially be, and is listed as "Yes" in the above table.