DoS (Denial of Service) org.eclipse.jetty:jetty-io Dependency in Crowd Data Center and Server

This High severity org.eclipse.jetty:jetty-io Dependency vulnerability was introduced in versions 5.0.0, 5.1.0, and 5.2.0 of Crowd Data Center and Server.

This org.eclipse.jetty:jetty-io 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:N/A:H allows an unauthenticated attacker to expose assets in your environment susceptible to exploitation which has no impact to confidentiality, no impact to integrity, high impact to availability, and requires no user interaction.

Atlassian recommends that Crowd 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||
|5.2.0 to 5.2.3|5.2.4|
|5.1.0 to 5.1.8|5.1.9 or 5.2.4 recommended|
|5.0 to 5.0.10|5.1.9 or 5.2.4 recommended |
|Any earlier versions|5.1.9 or 5.2.4 recommended |

See the release notes ([https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html]). You can download the latest version of Crowd Data Center and Server from the download center ([https://www.atlassian.com/software/crowd/download-archive]).

The National Vulnerability Database provides the following description for this vulnerability: In Eclipse Jetty 7.2.2 to 9.4.38, 10.0.0.alpha0 to 10.0.1, and 11.0.0.alpha0 to 11.0.1, CPU usage can reach 100% upon receiving a large invalid TLS frame.