Vulnerability identifier: #VU9018

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-2017-16510

CWE-ID: CWE-89

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description
The vulnerability allows a remote attacker to execute arbitrary SQL commands in application's database.

The vulnerability exists due to an error in $wpdb->prepare() that can lead to SQL injection attacks exploited via third-party software. Successful exploitation of the vulnerability may allow an attacker to execute arbitrary SQL commands in web application database.

Mitigation
Update to version 4.8.3.

Vulnerable software versions

WordPress: 4.8 - 4.8.2, 4.7 - 4.7.6, 4.4 - 4.4.11, 4.6 - 4.6.7, 4.5 - 4.5.10, 4.3 - 4.3.12, 4.2 - 4.2.16, 3.4.2, 4.1 - 4.1.19, 4.0 - 4.0.19, 3.9 - 3.9.20, 3.8 - 3.8.22, 3.7 - 3.7.22

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External links
http://wordpress.org/news/2017/10/wordpress-4-8-3-security-release/

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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.