Bug 631772 (CVE-2010-3198)

Summary:	CVE-2010-3198 Zope: Zope child threads termination due unhandled exceptions in PluggableAuthService (PAS)
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NEXTRELEASE	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	cluster-maint, jpokorny, jrusnack, rmccabe
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-08-01 12:57:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	772292
Bug Blocks:	711503

Description Jan Lieskovsky 2010-09-08 11:13:47 UTC

Zope application server framework improperly handled certain exceptions
in the code of PluggableAuthService (PAS). A remote, unauthenticated
user could request / access a private page, resulting in unhandled
exception to occur and Zope thread termination. Repetition of the
attack scenario could allow an attacker to terminate all Zope child
treads, leading to denial of service.

References:
  [1] http://bugs.gentoo.org/show_bug.cgi?id=336317
  [2] https://bugs.launchpad.net/zope2/+bug/627988
  [3] http://secunia.com/advisories/41267/
  [4] http://www.zope.org/Products/Zope/2.10.12/zope-2.10.12-released
  [5] http://www.zope.org/Products/Zope/2.11.7/zope-2.10.12-released

Upstream changesets:
a, against v2.10 branch:
   [6] http://svn.zope.org/Zope/branches/2.10/?rev=116087&view=rev

b, against v2.11 branch:
   [7] http://svn.zope.org/Zope/branches/2.11/?rev=116088&view=rev

Comment 1 Jan Lieskovsky 2010-09-08 11:15:00 UTC

Public proof of concept (from [2]):
====================================

The easiest way to trigger this behaviour, is buildout.

Create this buildout.cfg:

[buildout]
extends=http://svn.plone.org/svn/collective/buildout/plonetest/plone-3.3.5.cfg

Get yourself a copy of bootstrap.py and run buildout.

* Start Zope
* Create a new Plone site
* Add a new page, make it private.
* Log out
* As anonymous, manually craft the following URL: http://yoursite/plone/new_page?came_from:list=123

Comment 2 Jan Lieskovsky 2010-09-08 11:16:10 UTC

This issue affects the version of the zope package, as present within
EPEL-5 repository.

Please fix.

Comment 12 Jan Lieskovsky 2012-01-06 17:28:40 UTC

Statement:

Not vulnerable. This issue did not affect the versions of conga as shipped with Red Hat Cluster Suite for Red Hat Enterprise Linux 4 and as shipped with Red Hat Enterprise Linux 5 as they use own internal mechanism to verify if user requesting particular page is authenticated. Plone private pages permissions configuration mechanism is not used in conga.

Comment 13 Jan Lieskovsky 2012-01-06 17:29:51 UTC

Created zope tracking bugs for this issue

Affects: epel-5 [bug 772292]