#VU85434 Input validation error in Atlassian Confluence Server and Confluence Data Center - CVE-2023-22526

Vulnerability identifier: #VU85434

Vulnerability risk: Medium

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-22526

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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 user to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated user can pass specially crafted input to the application and execute arbitrary code.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Atlassian Confluence Server: 7.13.0 - 7.19.16, 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 - 8.5.4, 8.6.0 - 8.6.2, 8.7.0 - 8.7.1

Confluence Data Center: 7.13.0 - 7.19.16, 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 - 8.5.4, 8.6.0 - 8.6.2, 8.7.0 - 8.7.1

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External links
https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
https://jira.atlassian.com/browse/CONFSERVER-93516

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.