CVE-2023-22515

CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductAtlassian Confluence Data Center and Server
PublishedOct 4, 2023
First seenOct 4, 2023
Added to KEVOct 5, 2023

How to fix

CISA required action

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.

CISA due date: Oct 13, 2023
Update
  • atlassian confluence_data_center8.3.3, 8.4.3, 8.5.2 or later
  • atlassian confluence_server8.3.3, 8.4.3, 8.5.2 or later

Affected products

ProductAffected versionsFixed in
atlassian confluence_data_center8.0.0 ≤ v < 8.3.3, 8.4.0 ≤ v < 8.4.3, 8.5.0 ≤ v < 8.5.28.3.3, 8.4.3, 8.5.2
atlassian confluence_server8.0.0 ≤ v < 8.3.3, 8.4.0 ≤ v < 8.4.3, 8.5.0 ≤ v < 8.5.28.3.3, 8.4.3, 8.5.2

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

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CVE-2023-22515 · Atlassian Confluence Data Center and Server · Dark Radar