Actively exploited in the wild
Atlassian Crowd and Crowd Data Center Remote Code Execution Vulnerability
Atlassian - Crowd and Crowd Data Center · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2019-11580
CriticalCVSS 9.8KEVSummary
Atlassian Crowd and Crowd Data Center had the pdkinstall development plugin incorrectly enabled in release builds. Attackers who can send unauthenticated or authenticated requests to a Crowd or Crowd Data Center instance can exploit this vulnerability to install arbitrary plugins, which permits remote code execution on systems running a vulnerable version of Crowd or Crowd Data Center. All versions of Crowd from version 2.1.0 before 3.0.5, from version 3.1.0 before 3.1.6, from version 3.2.0 before 3.2.8, from version 3.3.0 before 3.3.5, and from version 3.4.0 before 3.4.4 are affected by this vulnerability.
Risk Assessment
An attacker could install malicious plugins and remotely execute code, leading to full system compromise. The risk is critical as it can be exploited without authentication.
Recommendation
Update Crowd and Crowd Data Center to version 3.0.5, 3.1.6, 3.2.8, 3.3.5, 3.4.4 or later. It is also recommended to check for unauthorized plugins.
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Original NVD description (English source)
Atlassian Crowd and Crowd Data Center had the pdkinstall development plugin incorrectly enabled in release builds. Attackers who can send unauthenticated or authenticated requests to a Crowd or Crowd Data Center instance can exploit this vulnerability to install arbitrary plugins, which permits remote code execution on systems running a vulnerable version of Crowd or Crowd Data Center. All versions of Crowd from version 2.1.0 before 3.0.5 (the fixed version for 3.0.x), from version 3.1.0 before 3.1.6 (the fixed version for 3.1.x), from version 3.2.0 before 3.2.8 (the fixed version for 3.2.x), from version 3.3.0 before 3.3.5 (the fixed version for 3.3.x), and from version 3.4.0 before 3.4.4 (the fixed version for 3.4.x) are affected by this vulnerability.