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Executive Summary
In the rapidly evolving landscape of cybersecurity, media companies are increasingly becoming prime targets for cyberattacks. The recent identification of the critical vulnerability CVE-2022-26134 in Atlassian Confluence Server and Data Center underscores the urgent need for robust security measures. This vulnerability, which allows unauthenticated attackers to execute arbitrary code, poses a significant threat to media companies that often rely on third-party vendors and may delay patching. This report delves into the technical intricacies of the vulnerability, its exploitation in the wild, and offers comprehensive mitigation strategies to safeguard against potential breaches.
Technical Information
The vulnerability CVE-2022-26134 is an OGNL injection flaw found in Confluence Server and Data Center. It affects versions from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1. The vulnerability has been assigned a CVSS score of 9.8, indicating its critical nature. The attack vector is network-based, with low attack complexity, no privileges required, and no user interaction needed. The impact on confidentiality, integrity, and availability is high, making it a severe threat to affected systems. The vulnerability allows attackers to inject malicious OGNL expressions, leading to remote code execution on vulnerable Confluence instances. This can result in unauthorized access, data exfiltration, and potential deployment of ransomware or other malicious payloads.
Exploitation in the Wild
The exploitation of CVE-2022-26134 has been observed in the wild, with threat actors actively targeting vulnerable Confluence instances. Attackers have leveraged this vulnerability to gain unauthorized access and execute remote code, often deploying malicious payloads to compromise systems. Notable incidents include the use of this vulnerability by cybercriminals to infiltrate networks, exfiltrate sensitive data, and disrupt operations. Indicators of Compromise (IOCs) associated with this vulnerability include unusual network traffic patterns, unexpected system behavior, and the presence of unauthorized scripts or executables on affected systems.
APT Groups using this vulnerability
While specific Advanced Persistent Threat (APT) groups exploiting CVE-2022-26134 have not been publicly identified, the nature of the vulnerability and its exploitation in the wild suggest that it could be leveraged by APT groups targeting sectors such as media, technology, and government. These groups often seek to exploit vulnerabilities in widely used software to gain a foothold in targeted networks, conduct espionage, or disrupt operations.
Affected Product Versions
The affected product versions include Confluence Server and Data Center from version 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1. Organizations using these versions are at risk and should take immediate action to mitigate the vulnerability.
Workaround and Mitigation
To mitigate the risk posed by CVE-2022-26134, organizations should immediately block all internet traffic to and from affected Confluence products and apply the vendor-provided update as per the Atlassian Security Advisory. Long-term measures include regularly updating and patching systems to prevent exploitation of known vulnerabilities, implementing network segmentation to limit the impact of potential breaches, and conducting regular security assessments to identify and address vulnerabilities.
References
For further technical details and updates on CVE-2022-26134, please refer to the following resources: NVD CVE-2022-26134, Atlassian Security Advisory, and Packet Storm Security Exploit.
Rescana is here for you
At Rescana, we are committed to helping our customers navigate the complex cybersecurity landscape. Our Continuous Threat and Exposure Management (CTEM) platform provides comprehensive solutions to identify, assess, and mitigate vulnerabilities, ensuring your organization's security posture remains robust. For any questions regarding this report or other cybersecurity concerns, please reach out to us at ops@rescana.com.