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SonicWall SonicOS 7.0 - Open Redirect

ID: CVE-2021-20031

Severity: medium

Author: gy741

Tags: cve,cve2021,sonicwall,redirect,edb,packetstorm

Description

Section titled “Description”

SonicWall SonicOS 7.0 contains an open redirect vulnerability. The values of the Host headers are implicitly set as trusted. An attacker can spoof a particular host header, allowing the attacker to render arbitrary links, obtain sensitive information, modify data, execute unauthorized operations. and/or possibly redirect a user to a malicious site.

YAML Source

Section titled “YAML Source”
id: CVE-2021-20031


info:
  name: SonicWall SonicOS 7.0 - Open Redirect
  author: gy741
  severity: medium
  description: SonicWall SonicOS 7.0 contains an open redirect vulnerability. The values of the Host headers are implicitly set as trusted. An attacker can spoof a particular host header, allowing the attacker to render arbitrary links, obtain sensitive information, modify data, execute unauthorized operations. and/or possibly redirect a user to a malicious site.
  remediation: |
    Apply the latest security patch or update provided by SonicWall to mitigate the vulnerability.
  reference:
    - https://www.exploit-db.com/exploits/50414
    - https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0019
    - http://packetstormsecurity.com/files/164502/Sonicwall-SonicOS-7.0-Host-Header-Injection.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-20031
    - 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-2021-20031
    cwe-id: CWE-601
    epss-score: 0.01452
    epss-percentile: 0.86646
    cpe: cpe:2.3:h:sonicwall:nsa_2650:-:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: sonicwall
    product: nsa_2650
    google-query: inurl:"auth.html" intitle:"SonicWall"
  tags: cve,cve2021,sonicwall,redirect,edb,packetstorm


http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{randstr}}.tld


    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'https://{{randstr}}.tld/auth.html'
          - 'Please be patient as you are being re-directed'
        condition: and


      - type: status
        status:
          - 200
# digest: 4a0a004730450221009e4e0a635edf933f7b33a1de6075789ea10c6e5a245d70b680a917e729688014022046536f1a94333b087a51c720b499f85c63825b7ee718eb8e64935c043a0a6f1b: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-2021-20031.yaml"

View on Github