Stored cross-site scripting in Async JavaScript plugin for WordPress



Published: 2020-02-28
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-79
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Subscribe 		Async JavaScript
Web applications / Modules and components for CMS

Vendor Frank Goossens (futtta)

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Stored cross-site scripting

EUVDB-ID: #VU25677

Risk: Medium

CVSSv3.1:

CVE-ID: N/A

CWE-ID:

Exploit availability:

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 in the "wp-admin/admin-ajax.php" file with the "aj_steps" AJAX action. A remote authenticated attacker can inject 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.

Note: the vulnerability is being actively exploited in the wild.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Async JavaScript: 1.14.12.10 - 2.19.07.14

Fixed software versions

CPE2.3 External links

http://wpvulndb.com/vulnerabilities/10098/
http://www.wordfence.com/blog/2020/02/site-takeover-campaign-exploits-multiple-zero-day-vulnerabilities/


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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