Vulnerability identifier: #VU41263

Vulnerability risk: Low

CVSSv3.1: 1.4 [CVSS:3.1/AV:N/AC:L/PR:/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2012-5502

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 safe_html.py in Plone before 4.2.3 and 4.3 before beta 1. 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: 1.0 - 4.3

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External links
http://www.openwall.com/lists/oss-security/2012/11/10/1
http://github.com/plone/Products.CMFPlone/blob/4.2.3/docs/CHANGES.txt
http://plone.org/products/plone/security/advisories/20121106/18
http://plone.org/products/plone-hotfix/releases/20121106

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote via the Internet.

Is there known malware, which exploits this vulnerability?

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