Microsoft SQL Server Reporting Services - Remote Code Execution

Exploited in the wild. Listed by CISA on 2024-09-18; known to be used by ransomware.

highseverity

8.8CVSS score

99%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Microsoft SQL Server Reporting Services is vulnerable to a remote code execution vulnerability because it incorrectly handles page requests.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.

Fix

Apply the latest security updates provided by Microsoft to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/ReportServer/Pages/ReportViewer.aspx
Positive when: contains "value=\"View Report\"" AND status 200

Run it with nuclei: nuclei -id CVE-2020-0618 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-0618

info:
  name: Microsoft SQL Server Reporting Services - Remote Code Execution
  author: joeldeleep
  severity: high
  description: Microsoft SQL Server Reporting Services is vulnerable to a remote code execution vulnerability because it incorrectly handles page requests.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Apply the latest security updates provided by Microsoft to mitigate this vulnerability.
  reference:
    - https://www.mdsec.co.uk/2020/02/cve-2020-0618-rce-in-sql-server-reporting-services-ssrs/
    - https://github.com/euphrat1ca/CVE-2020-0618
    - https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0618
    - http://packetstormsecurity.com/files/156707/SQL-Server-Reporting-Services-SSRS-ViewState-Deserialization.html
    - https://nvd.nist.gov/vuln/detail/CVE-2020-0618
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2020-0618
    cwe-id: CWE-502
    epss-score: 0.99046
    epss-percentile: 0.99931
    cpe: cpe:2.3:a:microsoft:sql_server:2012:sp4:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: microsoft
    product: sql_server
  tags: cve,cve2020,rce,packetstorm,microsoft,kev,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/ReportServer/Pages/ReportViewer.aspx"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'value="View Report"'

      - type: status
        status:
          - 200

References

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