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Detection rules › Sigma

Potential CVE-2023-23752 Exploitation Attempt

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

Detects the potential exploitation attempt of CVE-2023-23752 an Improper access check, in web service endpoints in Joomla

Known false positives

  • Vulnerability scanners

MITRE ATT&CK coverage

TacticTechniques
Initial Access

Rule body

title: Potential CVE-2023-23752 Exploitation Attempt
id: 0e1ebc5a-15d0-4bf6-8199-b2535397433a
status: test
description: Detects the potential exploitation attempt of CVE-2023-23752 an Improper access check, in web service endpoints in Joomla
references:
    - https://xz.aliyun.com/t/12175
    - https://twitter.com/momika233/status/1626464189261942786
author: Bhabesh Raj
date: 2023-02-23
tags:
    - attack.initial-access
    - attack.t1190
    - cve.2023-23752
    - detection.emerging-threats
logsource:
    category: webserver
detection:
    selection:
        cs-method: 'GET'
        cs-uri-query|contains|all:
            - '/api/index.php/v1/'
            - 'public=true'
    condition: selection
falsepositives:
    - Vulnerability scanners
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    cs-method: 'GET'
    cs-uri-query|contains|all:
        - '/api/index.php/v1/'
        - 'public=true'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
cs-methodeq
  • GET
field:"cs-method" kind:eq value:"GET"
cs-uri-querymatch
  • /api/index.php/v1/
  • public=true
field:"cs-uri-query" kind:match