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Detection rules › Sigma

VMware vCenter Server File Upload CVE-2021-22005

Status
test
Severity
high
Log source
category webserver
Author
Sittikorn S
Source
github.com/SigmaHQ/sigma

Detects exploitation attempts using file upload vulnerability CVE-2021-22005 in the VMWare vCenter Server.

Known false positives

  • Vulnerability Scanning

MITRE ATT&CK coverage

TacticTechniques
Initial Access

Rule body

title: VMware vCenter Server File Upload CVE-2021-22005
id: b014ea07-8ea0-4859-b517-50a4e5b7ecec
status: test
description: Detects exploitation attempts using file upload vulnerability CVE-2021-22005 in the VMWare vCenter Server.
references:
    - https://kb.vmware.com/s/article/85717
    - https://www.tenable.com/blog/cve-2021-22005-critical-file-upload-vulnerability-in-vmware-vcenter-server
author: Sittikorn S
date: 2021-09-24
modified: 2023-01-02
tags:
    - attack.initial-access
    - attack.t1190
    - cve.2021-22005
    - detection.emerging-threats
logsource:
    category: webserver
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|contains: '/analytics/telemetry/ph/api/hyper/send?'
    condition: selection
falsepositives:
    - Vulnerability Scanning
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    cs-method: 'POST'
    cs-uri-query|contains: '/analytics/telemetry/ph/api/hyper/send?'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
cs-methodeq
  • POST
field:"cs-method" kind:eq value:"POST"
cs-uri-querymatch
  • /analytics/telemetry/ph/api/hyper/send?
field:"cs-uri-query" kind:match value:"/analytics/telemetry/ph/api/hyper/send?"