ALASTOMCAT8.5-2023-016

Amazon Linux 2 Security Advisory: ALASTOMCAT8.5-2023-016
Advisory Release Date: 2023-10-16 13:45 Pacific
Advisory Updated Date: 2023-10-17 22:14 Pacific
Severity: Important
Issue Overview:

Incomplete Cleanup vulnerability in Apache Tomcat. When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue. (CVE-2023-42795)

The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-44487)

Improper Input Validation vulnerability in Apache Tomcat. Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue. (CVE-2023-45648)


Affected Packages:

tomcat


Note:

This advisory is applicable to Amazon Linux 2 - Tomcat8.5 Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update tomcat to update your system.

New Packages:
noarch:
    tomcat-8.5.94-1.amzn2.0.1.noarch
    tomcat-admin-webapps-8.5.94-1.amzn2.0.1.noarch
    tomcat-docs-webapp-8.5.94-1.amzn2.0.1.noarch
    tomcat-javadoc-8.5.94-1.amzn2.0.1.noarch
    tomcat-jsvc-8.5.94-1.amzn2.0.1.noarch
    tomcat-jsp-2.3-api-8.5.94-1.amzn2.0.1.noarch
    tomcat-lib-8.5.94-1.amzn2.0.1.noarch
    tomcat-servlet-3.1-api-8.5.94-1.amzn2.0.1.noarch
    tomcat-el-3.0-api-8.5.94-1.amzn2.0.1.noarch
    tomcat-webapps-8.5.94-1.amzn2.0.1.noarch

src:
    tomcat-8.5.94-1.amzn2.0.1.src

Additional References

Red Hat: CVE-2023-42795, CVE-2023-44487, CVE-2023-45648

Mitre: CVE-2023-42795, CVE-2023-44487, CVE-2023-45648