SB2019062401 - Multiple vulnerabilities in Shortlinks by Pretty Links plugin for WordPress

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) 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 user-supplied data in the "get_current_client_ip()" function on the “Pretty Links > Clicks” page. A remote attacker can target the logged in administrator 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.

2) Code Injection (CVE-ID: N/A)

The vulnerability allows a remote attacker to inject arbitrary code into CSV files.

The vulnerability exists due to insufficient sanitization of user-supplied data exported from the “Pretty Links > Clicks” page to a CSV file. A remote attacker can inject malicious data into one of the fields that will be executed when loading the CSV file into a spreadsheet application.

Successful exploitation of this vulnerability may allow a remote attacker to execute arbitrary code on the system but requires that the administrator performs malicious data export into CSV format and opens it with an application that will execute the injected code.

Remediation

Install update from vendor's website.

References

• https://blog.nintechnet.com/stored-xss-and-csv-injection-vulnerabilities-in-wordpress-shortlinks-by-pretty-links-plugin/
• https://wpvulndb.com/vulnerabilities/9357/