Amazon Linux 2 Security Advisory: ALASTOMCAT8.5-2023-012
Advisory Release Date: 2023-08-21 20:58 Pacific
Advisory Updated Date: 2023-09-25 21:58 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely. (CVE-2019-17569)
A flaw was found in Apache Tomcat. The HTTP header parsing code used an approach to end-of-line (EOL) parsing that allowed some invalid HTTP headers to be parsed as valid. This led to the possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. The highest threat with this vulnerability is system availability. (CVE-2020-1935)
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.
noarch:
tomcat-8.5.51-1.amzn2.noarch
tomcat-admin-webapps-8.5.51-1.amzn2.noarch
tomcat-docs-webapp-8.5.51-1.amzn2.noarch
tomcat-javadoc-8.5.51-1.amzn2.noarch
tomcat-jsvc-8.5.51-1.amzn2.noarch
tomcat-jsp-2.3-api-8.5.51-1.amzn2.noarch
tomcat-lib-8.5.51-1.amzn2.noarch
tomcat-servlet-3.1-api-8.5.51-1.amzn2.noarch
tomcat-el-3.0-api-8.5.51-1.amzn2.noarch
tomcat-webapps-8.5.51-1.amzn2.noarch
src:
tomcat-8.5.51-1.amzn2.src