Cross-site scripting in Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme plugin for WordPress



Published: 2020-07-10
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15299
CWE-ID CWE-79
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme
Web applications / Modules and components for CMS

Vendor King-Theme

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU29637

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-15299

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 in the "kc-online-preset-data" POST parameter. A remote 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

Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme: 2.0.0 - 2.9.4


CPE2.3 External links

http://www.wordfence.com/blog/2020/07/xss-flaw-impacting-100000-sites-patched-in-kingcomposer/

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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