Cross-site scripting in Easy Digital Downloads plugin for WordPress

1) Cross-site scripting

EUVDB-ID: #VU58018

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39354

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within the "$start_date" and "$end_date" parameters in the ~/includes/admin/payments/class-payments-table.php file. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Easy Digital Downloads: beta4 - 3.0.0 beta2

CPE2.3

• cpe:2.3:a:mordauk:easy-digital-downloads:beta4:*:*:*:*:*:*:
• cpe:2.3:a:mordauk:easy-digital-downloads:1.0:beta:*:*:*:*:*:
• cpe:2.3:a:mordauk:easy-digital-downloads:1.1.4.1:*:*:*:*:*:*:

External links

http://plugins.trac.wordpress.org/changeset/2616149/easy-digital-downloads/trunk/includes/admin/payments/class-payments-table.php
http://github.com/BigTiger2020/word-press/blob/main/Easy%20Digital%20Downloads.md
http://www.wordfence.com/vulnerability-advisories/#CVE-2021-39354

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.