Headline
GHSA-f632-9449-3j4w: Apache Tomcat - XSS in generated JSPs
Description:
The fix for improvement 69333 caused pooled JSP tags not to be released after use which in turn could cause output of some tags not to escaped as expected. This unescaped output could lead to XSS.
Versions Affected:
- Apache Tomcat 11.0.0
- Apache Tomcat 10.1.31
- Apache Tomcat 9.0.96
Mitigation:
Users of the affected versions should apply one of the following mitigations:
- Upgrade to Apache Tomcat 11.0.1 or later
- Upgrade to Apache Tomcat 10.1.33 or later Note: 10.1.32 was not released
- Upgrade to Apache Tomcat 9.0.97 or later
Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.