Vulnerability identifier: #VU63958

Vulnerability risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-26134

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Atlassian

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper input validation when processing OGNL expressions. A remote non-authenticated attacker can send a specially crafted request to the Confluence Server and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Atlassian Confluence Server: 7.17.0 - 7.17.3, 7.13.0 - 7.13.6, 7.14.0 - 7.14.2, 7.4.0 - 7.4.16, 7.16.0 - 7.16.3, 7.15.0 - 7.15.1, 7.11.0 - 7.11.6, 7.12.0 - 7.12.5, 7.10.0 - 7.10.1, 7.6.0 - 7.6.2, 7.9.0 - 7.9.1, 7.2.0 - 7.2.2, 7.8.0 - 7.8.1, 7.7.2 - 7.7.3, 7.5.0 - 7.5.2, 7.3.1 - 7.3.5, 7.1.0 - 7.1.2, 7.0.1 - 7.0.5, 6.13.0 - 6.13.23, 6.15.1 - 6.15.10, 6.14.0 - 6.14.3, 6.12.0 - 6.12.4, 6.11.0 - 6.11.2, 6.10.0 - 6.10.3, 6.9.0 - 6.9.3, 6.8.0 - 6.8.5, 6.7.0 - 6.7.3, 6.6.0 - 6.6.17, 6.5.0 - 6.5.3, 6.4.0 - 6.4.3, 6.3.1 - 6.3.4, 6.2.0 - 6.2.4, 6.1.0 - 6.1.4, 6.0.1 - 6.0.7, 5.10.0 - 5.10.9, 5.9.1 - 5.9.14, 5.8.2 - 5.8.18, 5.7 - 5.7.6, 5.6.1 - 5.6.6, 5.5 - 5.5.7, 5.4 - 5.4.4, 5.3 - 5.3.4, 5.2.3 - 5.2.5, 5.1 - 5.1.5, 5.0 - 5.0.3, 7.18.0

Jira Data Center: 6.0.0 - 8.22.3

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External links
http://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html

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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.