SB2019062508 - XSS in Custom 404 Pro plugin for WordPress

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Main Vulnerability Database SB2019062508

SB2019062508 - XSS in Custom 404 Pro plugin for WordPress

Published: June 25, 2019

Security Bulletin ID SB2019062508
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Reflected cross-site scripting (CVE-ID: N/A)

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 passed via the "s" HTTP GET 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.

PoC: 

/wp-admin/admin.php?page=c4p-main&s="><svg/onload=alert(/XSS/)>

Remediation

Install update from vendor's website.

References