Vulnerability identifier: #VU38204

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-7315

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description

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

Plone 3.3.0 through 3.3.6, 4.0.0 through 4.0.10, 4.1.0 through 4.1.6, 4.2.0 through 4.2.7, 4.3.0 through 4.3.6, and 5.0rc1 allows remote attackers to add a new member to a Plone site with registration enabled, without acknowledgment of site administrator.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Plone: 3.3 - 5.0

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External links
http://www.openwall.com/lists/oss-security/2015/09/22/13
http://bugzilla.redhat.com/show_bug.cgi?id=1264791
http://github.com/zopefoundation/Products.CMFCore/commit/e1d981bfa14b664317285f0f36498f4be4a23406
http://plone.org/security/hotfix/20150910/anonymous-is-able-to-create-plone-members

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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.