Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Plone | Plone | 2.5.5 |
Related Weaknesses (CWE)
References
- https://plone.org/security/hotfix/20171128/open-redirection-on-login-formVendor Advisory
- https://plone.org/security/hotfix/20171128/open-redirection-on-login-formVendor Advisory
FAQ
What is CVE-2017-1000481?
CVE-2017-1000481 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 tr...
How severe is CVE-2017-1000481?
CVE-2017-1000481 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-1000481?
Check the references section above for vendor advisories and patch information. Affected products include: Plone Plone.