Bug 146655

Summary: CAN-2005-0088 mod_python information leak
Product: Red Hat Enterprise Linux 3 Reporter: Josh Bressers <bressers>
Component: mod_pythonAssignee: Joe Orton <jorton>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: mjc, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20050210
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-02-10 15:56:43 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Attachments:
Description Flags
Patch to fix this issue. none

Description Josh Bressers 2005-01-31 15:43:56 UTC
Graham Dumpleton discovered a flaw which can affect anyone using the
publisher handle of the Apache Software Foundation mod_python.  The
publisher handle lets you publish objects inside modules to make them
callable via URL.  The flaw allows a carefully crafted URL to obtain extra
information that should not be visible (information leak).


Gregory (Grisha) Trubetskoy gives this example:

        For example, given a published module foo.py:

        _secret_info = "BLAH"

        def hello(req):

             return "Hello world!"

        A request to http://yourhost/fo.py/hello would result in (as expected)
        "Hello world!". _scret_info is inaccessible by the rules of the 
        publisher because it begins with an underscore.

        Here is the problem. A request to

        http://yourhost/foo.py/hello/func_globals

        Would result in a slew of interesting info (too much to paste in here),
        among them the name and value of _secret_info and other things such as 
        the full pathname of the file foo.py.

        The fix (tennatively) is this patch to the publisher.py file. As a
        super-quick hack perhaps dissalowing access to anything that contains
        "func_" in the apache config may be the way to go.

Comment 1 Josh Bressers 2005-01-31 15:43:56 UTC
Created attachment 110440 [details]
Patch to fix this issue.

Comment 2 Josh Bressers 2005-01-31 15:52:18 UTC
This issue also affects RHEL2.1

Comment 3 Joe Orton 2005-02-02 15:52:33 UTC
Erratum queued as RHSA-2005:104.

Comment 4 Mark J. Cox 2005-02-10 13:59:08 UTC
removing embargo

Comment 5 Josh Bressers 2005-02-10 15:56:43 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2005-104.html