Vulnerability identifier: #VU2932

Vulnerability risk: Critical

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2011-1950

CWE-ID: CWE-862

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to improper checking for authorization by plone.app.user. A remote attacker can modify the properties of arbitrary accounts.

Successful exploitation of the vulnerability may result in attacker's access to the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation
Update the latest version from vendor's website:
https://old.plone.org/products/plone-hotfix/releases/20110531

Vulnerable software versions

Plone: 4.0 - 4.1

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External links
http://old.plone.org/products/plone/security/advisories/CVE-2011-1950

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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. However, a fully functional exploit for this vulnerability is available.