SB2019070401 - Multiple vulnerabilities in WP Statistics plugin for WordPress

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) SQL injection (CVE-ID: N/A)

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to an endpoint of the API, which is exposed when the 'use cache plugin' setting is enabled. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

PoC:

time curl -X POST 'http://host/wp-json/wpstatistics/v1/hit' --data "wp_statistics_hit=x&wp_statistics_hit[track_all]=1&wp_statistics_hit[page_uri]=x&wp_statistics_hit[search_query]=x\' UNION ALL SELECT SLEEP(5)-- x"

2) Stored 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 the user’s IP. 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.

This vulnerability can only be exploited when the plugin uses a header to identify the IP address of the visitor (e.g. not REMOTE_ADDR)

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.

Remediation

Install update from vendor's website.

References

• https://github.com/wp-statistics/wp-statistics/commit/bd46721b97794a1b1520e24ff5023b6da738dd75
• https://blog.sucuri.net/2019/07/wordpress-plugin-wp-statistics-unauthenticated-stored-xss-under-cert...