Unauthorized Confluence Admin Account via Data Center/Server Exploit
CVE-2023-22515 Published on October 4, 2023

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.

NVD

Known Exploited Vulnerability

This Atlassian Confluence Data Center and Server Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Atlassian Confluence Data Center and Server contains a privilege escalation vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

The following remediation steps are recommended / required by October 26, 2023: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Vulnerability Analysis

CVE-2023-22515 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.


Products Associated with CVE-2023-22515

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Atlassian Confluence
 

Affected Versions

Atlassian Confluence Data Center: Atlassian Confluence Server: atlassian confluence_data_center: atlassian confluence_data_center: atlassian confluence_data_center: atlassian confluence_server: atlassian confluence_server: atlassian confluence_server:

Exploit Probability

EPSS
94.33%
Percentile
99.95%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.