January 16, 2024 at 01:10PM
A critical unauthenticated remote code execution (RCE) vulnerability affects Atlassian Confluence Data Center and Confluence Server versions released before Dec. 5 (CVE-2023-22527). The bug carries a 10/10 severity rating and affects versions 8.0.x to 8.5.3. Organizations should update to the latest versions to defend against potential cyber-attacks, as no mitigations are available.
Based on the meeting notes, the critical vulnerabilities in Atlassian Confluence Data Center and Confluence Server impact versions released before Dec. 5, posing a significant risk of unauthenticated remote code execution (RCE) attacks. The vulnerability, documented as CVE-2023-22527, has a severity rating of 10 out of 10 on the CVSS v3 scale. The affected versions include 8.0.x through 8.5.3.
Organizations that have updated to Confluence versions released in December are not affected. However, end-of-life instances (version 8.4.5 and earlier) will not receive patches. There are currently no available mitigations or workarounds, so admins are advised to apply the latest versions from last month to ensure full protection.
Cloud instances of Confluence are not affected. Atlassian recommends immediate patching of Confluence Data Center and Server instances. If immediate patching is not possible, Atlassian suggests removing systems from the Internet and backing up data outside of the Confluence environment.
Furthermore, Atlassian advises monitoring for potential malicious activity, as the complexity of the vulnerability makes it challenging to list all possible indicators of compromise. It’s important to note that previous critical bugs in Atlassian Confluence have attracted significant exploitation attempts, given the platform’s extensive use in network environments for collaboration, workflow, and software development.
Admins are urged to remain vigilant and take proactive measures to protect their systems from potential exploitation of this critical vulnerability.