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Date: Mon, 31 Jan 2022 09:34:53 +0100
From: Maurits van Rees <maurits@...rees.org>
To: oss-security@...ts.openwall.com
Subject: Plone: cache poisoning in image_view_fullscreen
Plone is vulnerable to reflected cross site scripting and open redirect
when an attacker can get a compromised version of the
image_view_fullscreen page in a cache, for example in Varnish.
The technique is known as cache poisoning.
Any later visitor can get redirected when clicking on a link on this page.
Usually only anonymous users are affected, but this depends on your
cache settings.
Versions Affected: All supported Plone versions (4.3.20 and any earlier
4.3.x version, 5.2.6 and any earlier 5.x version, 6.0.0a2 and any
earlier 6.0.0 version).
There are updated packages for Plone 5.2:
plone.app.contenttypes 2.2.3
Products.ATContentTypes 3.0.6
And updated packages for 6.0 (which is in alpha):
plone.app.contenttypes 3.0.0a9
With the default version pins, new Plone 5.2.7 and 6.0.0a3 are not
affected. Earlier versions are.
CVE number: CVE-2022-23599.
More information:
- GitHub:
https://github.com/plone/Products.CMFPlone/security/advisories/GHSA-8w54-22w9-3g8f
- community.plone.org:
https://community.plone.org/t/security-fix-for-image-view-fullscreen-cache-poisoning/14757?u=mauritsvanrees
- plone.org: https://plone.org/security/hotfix/20220128
--
Maurits van Rees https://maurits.vanrees.org/
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