Request Smuggling org.apache.tomcat:tomcat-catalina Dependency in Jira Software Data Center and Server

This High severity org.apache.tomcat:tomcat-catalina Dependency vulnerability was introduced in versions 9.4.0, 9.7.0, 9.9.0, 9.10.0, 9.11.0, and 9.12.0 of Jira Software Data Center and Server.

Jira Software Data Center versions 9.14.0, 9.13.0, 9.13.1 are NOT affected

This org.apache.tomcat:tomcat-catalina Dependency vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N allows an unauthenticated attacker to expose assets in your environment susceptible to exploitation which has no impact to confidentiality, high impact to integrity, no impact to availability, and requires no user interaction.

Atlassian recommends that Jira Software Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
||Affected versions||Fixed versions||
|from 9.12.0 LTS to 9.12.1 LTS|9.14.0 recommended or 9.13.0 or 9.13.1 or 9.12.2 LTS or 9.12.3 LTS or 9.12.4 LTS|
|from 9.11.0 to 9.11.3|9.14.0 recommended or 9.12.4 LTS|
|from 9.10.0 to 9.10.2|9.14.0 recommended or 9.12.4 LTS|
|from 9.9.0 to 9.9.2|9.14.0 recommended or 9.12.4 LTS|
|from 9.8.0 to 9.8.2|9.14.0 recommended or 9.12.4 LTS|
|from 9.7.0 to 9.7.2|9.14.0 recommended or 9.12.4 LTS|
|9.6.0|9.14.0 recommended or 9.12.4 LTS|
|from 9.5.0 to 9.5.1|9.14.0 recommended or 9.12.4 LTS|
|from 9.4.0 LTS to 9.4.14 LTS|9.14.0 recommended or 9.12.4 LTS or 9.4.15 LTS or 9.4.16 LTS or 9.4.17 LTS|
|from 9.3.0 to 9.3.3|9.14.0 recommended or 9.12.4 LTS or 9.4.17 LTS|
|from 9.2.0 to 9.2.1|9.14.0 recommended or 9.12.4 LTS or 9.4.17 LTS|
|from 9.1.0 to 9.1.1|9.14.0 recommended or 9.12.4 LTS or 9.4.17 LTS|
|9.0|9.14.0 recommended or 9.12.4 LTS or 9.4.17 LTS|
|from 8.22.0 to 8.22.6|9.14.0 recommended or 9.12.4 LTS or 9.4.17 LTS|
|Any earlier versions|9.14.0 recommended or 9.12.4 LTS or 9.4.17 LTS|

||Not Affected versions||
| * 9.14.0

• from 9.13.0 to 9.13.1|

See the release notes. You can download the latest version of Jira Software Data Center and Server from the download center.

The National Vulnerability Database provides the following description for this vulnerability: Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit 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-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.