When you visit a page where you need to login, Plone 2.5-5.1rc1 sends you to the login form with a 'came_from' parameter set to the previous url. After you login, you get redirected to the page you tried to view before. An attacker might try to abuse this by letting you click on a specially crafted link. You would login, and get redirected to the site of the attacker, letting you think that you are still on the original Plone site. Or some javascript of the attacker could be executed. Most of these types of attacks are already blocked by Plone, using the `isURLInPortal` check to make sure we only redirect to a page on the same Plone site. But a few more ways of tricking Plone into accepting a malicious link were discovered, and fixed with this hotfix.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - When you visit a page where you need to login, Plone 2.5-5.1rc1 sends you to the login form with a
    'came_from' parameter set to the previous url. After you login, you get redirected to the page you tried
    to view before. An attacker might try to abuse this by letting you click on a specially crafted link. You
    would login, and get redirected to the site of the attacker, letting you think that you are still on the
    original Plone site. Or some javascript of the attacker could be executed. Most of these types of attacks
    are already blocked by Plone, using the `isURLInPortal` check to make sure we only redirect to a page on
    the same Plone site. But a few more ways of tricking Plone into accepting a malicious link were
    discovered, and fixed with this hotfix. (CVE-2017-1000481)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - When you visit a page where you need to login, Plone 2.5-5.1rc1 sends you to the login form with a     'came_from' parameter set to the previous url. After you login, you get redirected to the page you tried     to view before. An attacker might try to abuse this by letting you click on a specially crafted link. You     would login, and get redirected to the site of the attacker, letting you think that you are still on the     original Plone site. Or some javascript of the attacker could be executed. Most of these types of attacks     are already blocked by Plone, using the `isURLInPortal` check to make sure we only redirect to a page on     the same Plone site. But a few more ways of tricking Plone into accepting a malicious link were     discovered, and fixed with this hotfix. (CVE-2017-1000481)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
432813	SCA: security update for Plone, Products.CMFPlone (GHSA-8g72-gq68-6gqh)	Tenable Cloud Security	SCA Checks	medium
432813	SCA: security update for Plone, Products.CMFPlone (GHSA-8g72-gq68-6gqh)	Tenable Self-Hosted Container Security	SCA Checks	medium
220119	Linux Distros Unpatched Vulnerability : CVE-2017-1000481	Nessus	Misc.	medium

Detections

Analytics

CVE-2017-1000481

medium

Tenable Plugins

medium

medium

medium