Improper access control in Email Subscribers & Newsletters – Simple and Effective Email Marketing WordPress Plugin

1) Improper access control

EUVDB-ID: #VU46643

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5780

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the "class-es-newsletters.php" class. A remote attacker can send forged emails to all recipients from the available lists of contacts or subscribers with complete control over the content and subject of the email.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Email Subscribers & Newsletters: 3.1 - 4.5.5

External links

http://www.tenable.com/security/research/tra-2020-53
http://wpvulndb.com/vulnerabilities/10403/

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.