Cisco Adaptive Security Appliance Software/Cisco Firepower Threat Defense - Directory Traversal

criticalseverity

9.1CVSS score

96.5%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software are susceptible to directory traversal vulnerabilities that could allow an unauthenticated, remote attacker to obtain read and delete access to sensitive files on a targeted system.

Impact

An attacker can exploit this vulnerability to read arbitrary files on the affected system, potentially leading to unauthorized access or sensitive information disclosure.

Fix

Apply the necessary security patches or updates provided by Cisco to mitigate the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/+CSCOE+/session_password.html
Positive when: contains in header "webvpn" or "Webvpn" AND status 200

Run it with nuclei: nuclei -id CVE-2020-3187 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-3187

info:
  name: Cisco Adaptive Security Appliance Software/Cisco Firepower Threat Defense - Directory Traversal
  author: KareemSe1im
  severity: critical
  description: Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software are susceptible to directory traversal vulnerabilities that could allow an unauthenticated, remote attacker to obtain read and delete access to sensitive files on a targeted system.
  impact: |
    An attacker can exploit this vulnerability to read arbitrary files on the affected system, potentially leading to unauthorized access or sensitive information disclosure.
  remediation: |
    Apply the necessary security patches or updates provided by Cisco to mitigate the vulnerability.
  reference:
    - https://twitter.com/aboul3la/status/1286809567989575685
    - http://packetstormsecurity.com/files/158648/Cisco-Adaptive-Security-Appliance-Software-9.7-Arbitrary-File-Deletion.html
    - https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-path-JE3azWw43
    - https://nvd.nist.gov/vuln/detail/CVE-2020-3187
    - https://github.com/Threekiii/Awesome-POC
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    cvss-score: 9.1
    cve-id: CVE-2020-3187
    cwe-id: CWE-22
    epss-score: 0.96503
    epss-percentile: 0.99882
    cpe: cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: cisco
    product: firepower_threat_defense
  tags: cve,cve2020,cisco,packetstorm,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/+CSCOE+/session_password.html"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - webvpn
          - Webvpn

      - type: status
        status:
          - 200

References

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