Atlassian Crowd & Crowd Data Center - Unauthenticated RCE

The pdkinstall development plugin is incorrectly enabled in release builds on Atlassian Crowd and Crowd Data Center. An attacker will install arbitrary plugins on Crowd or Crowd Data Center by sending authenticated and unauthenticated requests. This action permits Remote Code Execution attack on systems running vulnerable versions of Crowd and Crowd Data Center.

Affected versions

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.

Mitigation / Precaution

• We recommend you to update Crowd and Crowd data center to the latest version.

Written by

Manindar Mohan

Cyber Security Lead Engineer

Manieendar is a dedicated Security Engineer with a wealth of experience in the cybersecurity landscape. He plays a pivotal role at Beagle Security, where he employs his extensive knowledge to safeguard systems against cyber threats. Manieendar's passion for cybersecurity extends beyond his professional role; he actively contributes to the online security community through insightful articles and speaking engagements.