Vulnerability identifier: #VU369

Vulnerability risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7169

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient sanitization of input data within the upgrade package uploader. A remote authenticated user can use directory traversal sequences to write files outside the webroot directory.

Successful exploitation of this vulnerability may lead to website compromise.

Mitigation
Update your WordPress installation to one of the following versions:

3.7.x - 3.7.16
3.8.x - 3.8.16
3.9.x - 3.9.14
4.0.x - 4.0.13
4.1.x - 4.1.13
4.2.x - 4.2.10
4.3.x - 4.3.6
4.4.x - 4.4.5
4.5.x - 4.5.4
4.6.x - 4.6.1

Vulnerable software versions

WordPress: 3.7.1 - 3.7.15, 3.8.1 - 3.8.15, 3.9.0 - 3.9.13, 4.0.1 - 4.0.12, 4.1.1 - 4.1.12, 4.2.1 - 4.2.9, 4.3.0 - 4.3.5, 4.4.0 - 4.4.4, 4.5.1 - 4.5.3, 4.6

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External links
http://codex.wordpress.org/Version_3.7.16
http://codex.wordpress.org/Version_3.8.16
http://codex.wordpress.org/Version_3.9.14
http://codex.wordpress.org/Version_4.0.13
http://codex.wordpress.org/Version_4.1.13
http://codex.wordpress.org/Version_4.2.10
http://codex.wordpress.org/Version_4.3.6
http://codex.wordpress.org/Version_4.4.5
http://codex.wordpress.org/Version_4.5.4
http://codex.wordpress.org/Version_4.6.1

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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.