Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.
This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5.
Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.
The product does not properly “clean up” and remove temporary or supporting resources after they have been used.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Tomcat | Apache | 9.0.76 (including) | 9.0.104 (excluding) |
| Tomcat | Apache | 10.1.10 (including) | 10.1.40 (excluding) |
| Tomcat | Apache | 11.0.1 (including) | 11.0.6 (excluding) |
| Tomcat | Apache | 11.0.0-milestone10 (including) | 11.0.0-milestone10 (including) |
| Tomcat | Apache | 11.0.0-milestone11 (including) | 11.0.0-milestone11 (including) |
| Tomcat | Apache | 11.0.0-milestone12 (including) | 11.0.0-milestone12 (including) |
| Tomcat | Apache | 11.0.0-milestone13 (including) | 11.0.0-milestone13 (including) |
| Tomcat | Apache | 11.0.0-milestone14 (including) | 11.0.0-milestone14 (including) |
| Tomcat | Apache | 11.0.0-milestone15 (including) | 11.0.0-milestone15 (including) |
| Tomcat | Apache | 11.0.0-milestone16 (including) | 11.0.0-milestone16 (including) |
| Tomcat | Apache | 11.0.0-milestone17 (including) | 11.0.0-milestone17 (including) |
| Tomcat | Apache | 11.0.0-milestone18 (including) | 11.0.0-milestone18 (including) |
| Tomcat | Apache | 11.0.0-milestone19 (including) | 11.0.0-milestone19 (including) |
| Tomcat | Apache | 11.0.0-milestone2 (including) | 11.0.0-milestone2 (including) |
| Tomcat | Apache | 11.0.0-milestone20 (including) | 11.0.0-milestone20 (including) |
| Tomcat | Apache | 11.0.0-milestone21 (including) | 11.0.0-milestone21 (including) |
| Tomcat | Apache | 11.0.0-milestone22 (including) | 11.0.0-milestone22 (including) |
| Tomcat | Apache | 11.0.0-milestone23 (including) | 11.0.0-milestone23 (including) |
| Tomcat | Apache | 11.0.0-milestone24 (including) | 11.0.0-milestone24 (including) |
| Tomcat | Apache | 11.0.0-milestone25 (including) | 11.0.0-milestone25 (including) |
| Tomcat | Apache | 11.0.0-milestone3 (including) | 11.0.0-milestone3 (including) |
| Tomcat | Apache | 11.0.0-milestone4 (including) | 11.0.0-milestone4 (including) |
| Tomcat | Apache | 11.0.0-milestone5 (including) | 11.0.0-milestone5 (including) |
| Tomcat | Apache | 11.0.0-milestone6 (including) | 11.0.0-milestone6 (including) |
| Tomcat | Apache | 11.0.0-milestone7 (including) | 11.0.0-milestone7 (including) |
| Tomcat | Apache | 11.0.0-milestone8 (including) | 11.0.0-milestone8 (including) |
| Tomcat | Apache | 11.0.0-milestone9 (including) | 11.0.0-milestone9 (including) |