CVE-2021-42340
Publication date 14 October 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
The fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.
Status
Package | Ubuntu Release | Status |
---|---|---|
tomcat8 | 18.04 LTS bionic |
Vulnerable
|
16.04 LTS xenial |
Vulnerable
|
|
14.04 LTS trusty | Ignored end of standard support | |
tomcat9 | 24.04 LTS noble |
Needs evaluation
|
22.04 LTS jammy |
Needs evaluation
|
|
20.04 LTS focal |
Vulnerable
|
|
18.04 LTS bionic |
Vulnerable
|
|
16.04 LTS xenial | Ignored end of standard support | |
14.04 LTS trusty | Ignored end of standard support |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 · High |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Other references
- https://www.openwall.com/lists/oss-security/2021/10/14/1
- https://github.com/apache/tomcat/commit/80f1438ec45e77a07b96419808971838d259eb47 (9.0.54)
- https://github.com/apache/tomcat/commit/d27535bdee95d252418201eb21e9d29476aa6b6a (8.5.72)
- https://lists.apache.org/thread.html/r83a35be60f06aca2065f188ee542b9099695d57ced2e70e0885f905c%40%3Cannounce.tomcat.apache.org%3E
- https://www.cve.org/CVERecord?id=CVE-2021-42340