XSS Vulnerability In Ext JS Action Column getTip

Rule number

SN-JSL-002 (for ServiceNow)

SF-JSL-002 (for Salesforce)

Impact #

The getTip() method of Action Columns of Sencha Ext JS 4 to 6 before 6.6.0 is vulnerable to XSS attacks, even when passed HTML-escaped data. The getTip() method of Action Columns takes HTML-escaped data and un-escapes it. If the tool tip contains user-controlled data, an attacker could exploit this to create a cross-site scripting attack, even when developers took precautions and escaped data.

Remediation #

Upgrade to Ext JS version 6.6.0 or later. There is no code fix for this vulnerability, other than ensuring that the getTip() method is never used.

References #

This rule is linked to Common Weakness Enumeration CWE-79 Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’).