Vulnerability identifier: #VU39576

Vulnerability risk: Medium

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7135

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in Plone CMS 5.x through 5.0.6 and 4.2.x through 4.3.11. A remote authenticated attacker can send a specially crafted HTTP request and remote administrators to read arbitrary files via a . (dot dot) in the path parameter in a getFile action to Plone/++theme++barceloneta/@@plone.resourceeditor.filemanager-actions.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Plone: 4.2 - 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/filesystem-information-leak

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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