#VU85413 Template injection in Atlassian Confluence Server and Confluence Data Center - CVE-2023-22527

Vulnerability identifier: #VU85413

Vulnerability risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2023-22527

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Atlassian

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Atlassian Confluence Server: 8.0.0 - 8.0.4, 8.1.0 - 8.1.4, 8.2.0 - 8.2.3, 8.3.0 - 8.3.4, 8.4.0 - 8.4.5, 8.5.0 - 8.5.3

Confluence Data Center: 8.0.0 - 8.0.4, 8.1.0 - 8.1.4, 8.2.0 - 8.2.3, 8.3.0 - 8.3.4, 8.4.0 - 8.4.5, 8.5.0 - 8.5.3

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External links
https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
https://jira.atlassian.com/browse/CONFSERVER-93833

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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.