Vulnerability identifier: #VU26600

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7947

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Login by Auth0
Web applications / Modules and components for CMS

Vendor: auth0 on WordPress

Description

The vulnerability allows a remote attacker to inject arbitrary code into CSV files.

The vulnerability exists due to insufficient sanitization of user-supplied data when constructing CSV files in the numerous fields. A remote attacker can inject malicious data into the contact form fields that is used later by the plugin to generate CSV files. Such files can be opened with Microsoft Excel built-in functions and utilize its functionality to execute malicious macros.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Login by Auth0: 3.1.1 - 3.11.3

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External links
http://auth0.com/docs/cms/wordpress
http://auth0.com/docs/security/bulletins/2020-03-31_wpauth0
http://github.com/auth0/wp-auth0/security/advisories/GHSA-59vf-cgfw-6h6v
http://wordpress.org/plugins/auth0/#developers
http://wpvulndb.com/vulnerabilities/10160/

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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.