Vulnerability identifier: #VU41397

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-5203

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

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

wp-includes/class-wp-customize-widgets.php in the widget implementation in WordPress 3.9.x before 3.9.2 might allow remote attackers to execute arbitrary code via crafted serialized data.

Mitigation
Install update from vendor's website.

Vulnerable software versions

WordPress: 3.9.0 - 3.9.1

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External links
http://openwall.com/lists/oss-security/2014/08/13/3
http://core.trac.wordpress.org/changeset/29389
http://wordpress.org/news/2014/08/wordpress-3-9-2/

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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.