DoS (Denial of Service) com.fasterxml.jackson.core:jackson-databind Dependency in Crowd Data Center and Server

This High severity com.fasterxml.jackson.core:jackson-databind Dependency vulnerability was introduced in versions 5.0.0, 5.1.0, and 5.2.3 of Crowd Data Center and Server.

This com.fasterxml.jackson.core:jackson-databind 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|5.2.4 recommended or 5.1.9|
|5.0 to 5.0.10|5.2.4 recommended |
|Any earlier versions|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 FasterXML jackson-databind before versions 2.13.4.1 and 2.12.17.1, resource exhaustion can occur because of a lack of a check in primitive value deserializers to avoid deep wrapper array nesting, when the UNWRAP_SINGLE_VALUE_ARRAYS feature is enabled.