#VU18792 Improper access control in WPGraphQL - CVE-2019-9879

Vulnerability identifier: #VU18792

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2019-9879

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WPGraphQL
Web applications / JS libraries

Vendor: WPGraphQL

Description

The vulnerability allows a remote attacker to compromise the website.

The vulnerability exists due to the software allows to assign a newly created user administrative privileges during account registration. A remote attacker can create an administrative account and gain complete access to the website.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WPGraphQL: 0.0.2 - 0.2.3

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External links
https://github.com/pentestpartners/snippets/blob/master/wp-graphql0.2.3_exploit.py
https://github.com/wp-graphql/wp-graphql/releases/tag/v0.3.0
https://wpvulndb.com/vulnerabilities/9282
https://www.pentestpartners.com/security-blog/pwning-wordpress-graphql/

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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. However, proof of concept for this vulnerability is available.