advisory (at) stgsecurity (dot) com [email concealed] wrote:
> proof of concept
>
> http://[victim]/<img src=javascript:alert('hi')>
Just to note, this bug only affects ZWiki version after Zwiki 0.10.0rc1.
Also, the fix is pretty trivial, apply the following patch to
standard_error_message in all ZWiki folders (and on disk, so you don't
have to do it again ;-):
--- standard_error_message.dtml.original Fri Nov 26 09:17:22 2004
+++ standard_error_message.dtml Fri Nov 26 09:17:55 2004
@@ -29,7 +29,7 @@
<body>
<p>
I could not find any likely page matching
- "<b><dtml-var "here.urlunquote(searchexpr)"></b>"
+ "<b><dtml-var "here.urlunquote(searchexpr)" html_quote></b>"
</p>
<p>
Click here to
Sadly, I see I broke the bug tracker, 'cos it's also a ZWiki, and has
MUCH bigger problems than the above :-S (execution of any DTML in the
context of (hopefully!) the user that created it along with a total lack
of html quoting in the page :-(
In short, only use ZWiki if you know what you're doing, and preferably
only if it's not anonymously accessible...
> proof of concept
>
> http://[victim]/<img src=javascript:alert('hi')>
Just to note, this bug only affects ZWiki version after Zwiki 0.10.0rc1.
Also, the fix is pretty trivial, apply the following patch to
standard_error_message in all ZWiki folders (and on disk, so you don't
have to do it again ;-):
--- standard_error_message.dtml.original Fri Nov 26 09:17:22 2004
+++ standard_error_message.dtml Fri Nov 26 09:17:55 2004
@@ -29,7 +29,7 @@
<body>
<p>
I could not find any likely page matching
- "<b><dtml-var "here.urlunquote(searchexpr)"></b>"
+ "<b><dtml-var "here.urlunquote(searchexpr)" html_quote></b>"
</p>
<p>
Click here to
Sadly, I see I broke the bug tracker, 'cos it's also a ZWiki, and has
MUCH bigger problems than the above :-S (execution of any DTML in the
context of (hopefully!) the user that created it along with a total lack
of html quoting in the page :-(
In short, only use ZWiki if you know what you're doing, and preferably
only if it's not anonymously accessible...
*sigh*
Chris
--
Simplistix - Content Management, Zope & Python Consulting
- http://www.simplistix.co.uk
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