Vulnerability identifier: #VU37714

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-1000484

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

By linking to a specific url in Plone 2.5-5.1rc1 with a parameter, an attacker could send you to his own website. On its own this is not so bad: the attacker could more easily link directly to his own website instead. But in combination with another attack, you could be sent to the Plone login form and login, then get redirected to the specific url, and then get a second redirect to the attacker website. (The specific url can be seen by inspecting the hotfix code, but we don't want to make it too easy for attackers by spelling it out here.)

Mitigation
Install update from vendor's website.

Vulnerable software versions

Plone: 2.5.5 - 5.1

---

External links
http://plone.org/security/hotfix/20171128/an-open-redirection-when-calling-a-specific-url

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.