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EyouCMS 1.5.4 Open Redirect

ID: CVE-2021-39501

Severity: medium

Author: 0x_Akoko

Tags: cve2021,cve,redirect,eyoucms,cms

Description

Section titled “Description”

EyouCMS 1.5.4 is vulnerable to an Open Redirect vulnerability. An attacker can redirect a user to a malicious url via the Logout function.

YAML Source

Section titled “YAML Source”
id: CVE-2021-39501


info:
  name: EyouCMS 1.5.4 Open Redirect
  author: 0x_Akoko
  severity: medium
  description: EyouCMS 1.5.4 is vulnerable to an Open Redirect vulnerability. An attacker can redirect a user to a malicious url via the Logout function.
  impact: |
    Successful exploitation of this vulnerability could lead to phishing attacks, credential theft,.
  remediation: |
    Apply the latest security patch or upgrade to a newer version of EyouCMS to mitigate the vulnerability.
  reference:
    - https://github.com/eyoucms/eyoucms/issues/17
    - https://github.com/KietNA-HPT/CVE
    - https://nvd.nist.gov/vuln/detail/CVE-2021-39501
    - https://github.com/ARPSyndicate/kenzer-templates
    - 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-2021-39501
    cwe-id: CWE-601
    epss-score: 0.00141
    epss-percentile: 0.49694
    cpe: cpe:2.3:a:eyoucms:eyoucms:1.5.4:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: eyoucms
    product: eyoucms
    fofa-query: title="eyoucms"
  tags: cve2021,cve,redirect,eyoucms,cms


http:
  - method: GET
    path:
      - '{{BaseURL}}/index.php?m=user&c=Users&a=logout&referurl=https://interact.sh'


    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?://|//)?(?:[a-zA-Z0-9\-_]*\.)?interact\.sh(?:\s*?)$'
# digest: 4a0a0047304502210096ad0c997fe2ab1565344289298ece91f380870487ab79b76a275408a93c9aff0220323419c9952c4d6d2f50769606f239ee235ab2ce939149874eb60c867a3f0428:922c64590222798bb761d5b6d8e72950

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-2021-39501.yaml"

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