Vulnerability identifier: #VU81631

Vulnerability risk: Critical

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-22515

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Confluence Data Center
Server applications / Other server solutions

Vendor: Atlassian

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to missing authentication at the "/setup/setupadministrator.action" endpoint. A remote non-authenticated attacker can send specially crafted requests to the server to create an administrative account and gain unauthorized access to the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Confluence Data Center: 8.5.0 - 8.5.1, 8.4.0 - 8.4.2, 8.3.0 - 8.3.2, 8.2.0 - 8.2.3, 8.1.0 - 8.1.3, 8.0.0 - 8.0.4

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External links
http://jira.atlassian.com/browse/CONFSERVER-92457
http://confluence.atlassian.com/display/KB/FAQ+for+CVE-2023-22515
http://confluence.atlassian.com/pages/viewpage.action?pageId=1295682276
http://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.