Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Vulnerabilities

Details of Atlassian Confluence RCE Vulnerability Disclosed

SonicWall has shared technical details on a recently addressed high-severity remote code execution flaw in Confluence.

A high-severity vulnerability in Atlassian Confluence Data Center and Server can be exploited to execute arbitrary code remotely.

Tracked as CVE-2024-21683 (CVSS score of 8.3), the remote code execution (RCE) bug is rooted in the input validation mechanism of the function that allows users to add a new code block macro language definition.

“Insufficient validation allows the authenticated attacker to inject malicious Java code embedded in a file,” cybersecurity firm SonicWall warns in a technical writeup.

Successful exploitation of the bug, however, requires that the attacker has the privileges required for adding new macro languages, and to upload a malicious language file using the ‘Add a new language’ function in the ‘Configure Code Macro’ section.

According to Atlassian, which rolled out patches for the vulnerability a couple of weeks ago, the issue was introduced in Confluence version 5.2.

“The exploitation of this vulnerability yields the remote threat actor the ability to execute arbitrary code on the server. It has a high impact on the confidentiality, integrity and availability of the system and does not require user interaction,” SonicWall warns.

The vulnerability impacts all Confluence Data Center versions from 5.2 to 8.9.0 and was addressed with the release of versions 8.9.1, 8.5.9 LTS, and 7.19.22 LTS of the product. The updates resolve four other vulnerabilities in Confluence and third-party dependencies.

While Atlassian makes no mention of the bug being exploited in the wild, threat actors have been observed targeting Confluence vulnerabilities shortly after disclosure.

Advertisement. Scroll to continue reading.

CVE-2024-21683 too could soon be exploited in attacks, as proof-of-concept (PoC) code targeting it was released shortly after patches started rolling out and technical details on the bug are also available.

Related: Atlassian Patches Critical Vulnerability in Bamboo Data Center and Server

Related: Atlassian Patches Critical Remote Code Execution Vulnerabilities

Related: Exploitation of Critical Confluence Vulnerability Begins

Related: Two Jira Plugin Vulnerabilities in Attacker Crosshairs

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Trending

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join the session as we discuss the challenges and best practices for cybersecurity leaders managing cloud identities.

Register

The AI Risk Summit brings together security and risk management executives, AI researchers, policy makers, software developers and influential business and government stakeholders.

Register

People on the Move

Retired U.S. Army General and former NSA Director Paul M. Nakasone has joined the Board of Directors at OpenAI.

Jill Passalacqua has been appointed Chief Legal Officer at autonomous security solutions provider Horizon3.ai.

Cisco has appointed Sean Duca as CISO and Practice Leader for the APJC region.

More People On The Move

Expert Insights