Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL

10 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation Likelihood

EPSS Prediction

94.33 %

Predictive Probability

Percentile Rank

99.9 th

Documented as more likely to be exploited than 99.9% of known CVEs.

Detection Date

Oct 05, 2023

Remediation Due

Oct 13, 2023

CISA Catalog Active

Threat Analysis

Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

Remediation Directive

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.

External Intelligence

https://confluence.atlassian.com/security/cve-2023-22515-privilege-escalation-vulnerability-in-confluence-data-center-and-server-1295682276.html

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2023-22515