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Nova noVNC - Open Redirect

ID: CVE-2021-3654

Severity: medium

Author: geeknik

Tags: cve2021,cve,redirect,novnc,seclists,openstack

Description

Section titled “Description”

Nova noVNC contains an open redirect vulnerability. 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-2021-3654


info:
  name: Nova noVNC - Open Redirect
  author: geeknik
  severity: medium
  description: Nova noVNC contains an open redirect vulnerability. 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 potential phishing attacks.
  remediation: |
    Apply the latest security patches or updates provided by the vendor to fix the open redirect vulnerability in the Nova noVNC application.
  reference:
    - https://seclists.org/oss-sec/2021/q3/188
    - http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3654
    - https://bugs.python.org/issue32084
    - https://opendev.org/openstack/nova/commit/04d48527b62a35d912f93bc75613a6cca606df66
    - https://nvd.nist.gov/vuln/detail/CVE-2021-3654
  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-2021-3654
    cwe-id: CWE-601
    epss-score: 0.92607
    epss-percentile: 0.98994
    cpe: cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: openstack
    product: nova
  tags: cve2021,cve,redirect,novnc,seclists,openstack


http:
  - method: GET
    path:
      - '{{BaseURL}}//interact.sh/%2f..'


    matchers-condition: and
    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?://|//)?(?:[a-zA-Z0-9\-_\.@]*)interact\.sh.*$'


      - type: status
        status:
          - 302
          - 301
# digest: 4b0a00483046022100b18401d5fe995963bccfa9de83c9b2b22a7411877e9f359c8592d02b05e216990221008f799793b510f03367e703442fb5e219682ac1460e8ddc402321e5ec49797454:922c64590222798bb761d5b6d8e72950

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-2021-3654.yaml"

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