CVE-2017-1000481

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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.

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Plone 安全漏洞

Plone是美国Plone基金会的一套建立在应用服务器（Zope）上的免费且开源的内容管理系统（CMS）。该系统采用Python语言开发，适用于门户网站、企业内外网站、文档发布系统等。 Plone 2.5版本至5.1rc1版本中存在开放重定向漏洞。攻击者可通过诱使用户点击特制的链接利用该漏洞将用户重定向到攻击者控制的网站或执行JavaScript代码。

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