Vulnerability identifier: #VU39562

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-2016-7139

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in an unspecified page template in Plone CMS 5.x through 5.0.6, 4.x through 4.3.11, and 3.3.x through 3.3.6. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Plone: 3.3 - 5.1a1

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External links
http://packetstormsecurity.com/files/139110/Plone-CMS-4.3.11-5.0.6-XSS-Traversal-Open-Redirection.html
http://seclists.org/fulldisclosure/2016/Oct/80
http://www.openwall.com/lists/oss-security/2016/09/05/4
http://www.openwall.com/lists/oss-security/2016/09/05/5
http://www.securityfocus.com/archive/1/539572/100/0/threaded
http://www.securityfocus.com/bid/92752
http://plone.org/security/hotfix/20160830/non-persistent-xss-in-plone

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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.