CVE-2023-22515: The Confluence Data Center and Server Vulnerability

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Recently, a security concern has caught the attention of the cybersecurity world – a privilege escalation vulnerability within the Confluence Data Center and Server. This flaw allows external attackers to exploit some Confluence instances, creating unauthorized administrator accounts and thereby gaining unrestricted access to the Confluence platform.

It’s worth noting that Atlassian Cloud sites remain unaffected by this vulnerability. If you access your Confluence site through an atlassian.net domain, rest assured, it’s hosted by Atlassian and remains invulnerable to this particular flaw.

Severity: Why It’s Critical

Vulnerability Intelligence page for CVE-2023-22515 in SOCRadar Platform.

While NVD hasn’t assigned a score to this vulnerability as of yet, Atlassian rates it as ‘critical’. It’s a 10.0 on the CVSS scale, which is the highest possible score, indicating the severity and potential impact. The vulnerability is remotely exploitable, aligning more with an authentication bypass or remote code execution than a typical privilege escalation issue. For businesses and IT teams, understanding the severity is paramount in determining how urgently they need to respond.

Are You Affected?

Versions before 8.0.0 remain unaffected by this vulnerability. Furthermore, Atlassian Cloud sites remain immune to this issue. If your Confluence site is accessed through an atlassian.net domain, it is hosted by Atlassian and remains safe from this vulnerability. However, the subsequent versions of Confluence Server and Data Center are at risk:

  • 8.0.0
  • 8.0.1
  • 8.0.2
  • 8.0.3
  • 8.0.4
  • 8.1.0
  • 8.1.1
  • 8.1.3
  • 8.1.4
  • 8.2.0
  • 8.2.1
  • 8.2.2
  • 8.2.3
  • 8.3.0
  • 8.3.1
  • 8.3.2
  • 8.4.0
  • 8.4.1
  • 8.4.2
  • 8.5.0
  • 8.5.1

Instances on the public internet are at an elevated risk, given the exploitability of this vulnerability even without authentication.

Recommended Actions

For those running affected versions:

  1. Immediate Upgrade: Atlassian suggests upgrading to one of the following fixed versions:
  • 8.3.3 or later
  • 8.4.3 or later
  • 8.5.2 (Long Term Support release) or later
  • Mitigation: If upgrading is not feasible immediately, restricting external network access to the affected instance is recommended. Furthermore, known attack vectors can be mitigated by blocking access to the /setup/* endpoints on Confluence instances. Specific directions on doing this have been provided by Atlassian.
  • Threat Detection: Engage your security team to check for indicators of compromise, such as unexpected members in the confluence-administrator group or unusual user account creations.

    • Conclusion

    Vulnerability Intelligence module of SOCRadar Platform.Vulnerability Intelligence module of SOCRadar Platform.

    This vulnerability shows the significance of timely patch management and a proactive cybersecurity approach. We, at SOCRadar, consistently monitor such vulnerabilities to alert and guide organizations in making informed security decisions.

    Stay vigilant and ensure your systems are regularly updated and checked for potential vulnerabilities.

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