CVE-2023-22515
Atlassian Confluence Data Center and Server Broken Access Control Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 13 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.16% probability · 100th percentile
- CISA KEV
- Listed 5 October 2023 · due 13 October 2023 · used in ransomware campaigns
- Weakness
- CWE-20
- Affected
- atlassian/confluence data center · atlassian/confluence server
- Source
- security@atlassian.com
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA. https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html; https://nvd.nist.gov/vuln/detail/CVE-2023-22515
References
- http://packetstormsecurity.com/files/175225/Atlassian-Confluence-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://confluence.atlassian.com/display/KB/FAQ+for+CVE-2023-22515Vendor Advisory
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1295682276Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-92475Issue Tracking, Vendor Advisory
- http://packetstormsecurity.com/files/175225/Atlassian-Confluence-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://confluence.atlassian.com/display/KB/FAQ+for+CVE-2023-22515Vendor Advisory
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1295682276Vendor Advisory
- https://jira.atlassian.com/browse/CONFSERVER-92475Issue Tracking, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-22515US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.