Atlassian Crowd - Remote Code Execution (CVE-2019-11580)

Atlassian Crowd is affected a Remote Code Execution vulnerability. The root cause of this vulnerability consists in the pdkinstall development plugin incorrectly enabled. This allows a specially crafted request to install an arbitrary plugin via the Upload Plugin endpoint (POST /crowd/admin/uploadplugin.action). An attacker can install a plugin that contains a webshell file placed to the /crowd/plugins/servlet endpoint of Crowd which can allow for Remote Code Execution.

Sniper can gain unauthenticated Remote Code Execution on the target system and extract multiple artefacts as evidence.

The risk exists that a remote unauthenticated attacker can fully compromise the server in order to steal confidential information, install ransomware, or pivot to the internal network.

Upgrade the Atlassian Crowd to the latest version.

https://nvd.nist.gov/vuln/detail/cve-2019-11580

https://confluence.atlassian.com/crowd/crowd-security-advisory-2019-05-22-970260700.html