Ivanti EPMM Remote Unauthenticated API Access CVE-2023-35078

name: Ivanti EPMM Remote Unauthenticated API Access CVE-2023-35078
id: 66b9c9ba-7fb2-4e80-a3a2-496e5e078167
version: 10
creation_date: '2023-07-31'
modification_date: '2026-05-13'
author: Michael Haag, Splunk
status: production
type: TTP
description: |-
    The following analytic detects attempts to exploit CVE-2023-35078, a vulnerability in Ivanti Endpoint Manager Mobile (EPMM) versions up to 11.4.
    It identifies HTTP requests to the endpoint "/mifs/aad/api/v2/authorized/users?*" with a status code of 200 in web logs.
    This activity is significant as it indicates unauthorized remote access to restricted functionalities or resources.
    If confirmed malicious, this could lead to data theft, unauthorized modifications, or further system compromise, necessitating immediate action to mitigate potential severe impacts.
data_source:
    - Suricata
search: |-
    | tstats `security_content_summariesonly`
      count min(_time) as firstTime
            max(_time) as lastTime
    
    FROM datamodel=Web WHERE
    
    Web.url="*/mifs/aad/api/v2/authorized/users?*"
    Web.status=200
    
    BY Web.http_user_agent Web.status Web.http_method
       Web.url Web.url_length Web.src Web.dest
    
    | `drop_dm_object_name("Web")`
    | `security_content_ctime(firstTime)`
    | `security_content_ctime(lastTime)`
    | `ivanti_epmm_remote_unauthenticated_api_access_cve_2023_35078_filter`
how_to_implement: |-
    To implement this analytic, a network product similar to Suricata or Palo Alto needs to be mapped to the Web datamodel. Modify accordingly to work with your products.
known_false_positives: |-
    The Proof of Concept exploit script indicates that status=200 is required for successful exploitation of the vulnerability.
    False positives may be present if status=200 is removed from the search.
    If it is removed,then the search also alert on status=301 and status=404 which indicates unsuccessful exploitation attempts.
    Analysts may find it useful to hunt for these status codes as well, but it is likely to produce a significant number of alerts as this is a widespread vulnerability.
references:
    - https://forums.ivanti.com/s/article/CVE-2023-35078-Remote-unauthenticated-API-access-vulnerability?language=en_US
    - https://github.com/vchan-in/CVE-2023-35078-Exploit-POC/blob/main/cve_2023_35078_poc.py
drilldown_searches:
    - name: View the detection results for - "$dest$"
      search: '%original_detection_search% | search  dest = "$dest$"'
      earliest_offset: $info_min_time$
      latest_offset: $info_max_time$
    - name: View risk events for the last 7 days for - "$dest$"
      search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$") | stats count min(_time) as firstTime max(_time) as lastTime values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories) as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic) as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)`'
      earliest_offset: 7d
      latest_offset: "0"
finding:
    title: Potential CVE-2023-35078 against an Ivanti EPMM appliance on $dest$.
    entity:
        field: dest
        type: system
        score: 50
analytic_story:
    - Ivanti EPMM Remote Unauthenticated Access
asset_type: Web Server
cve:
    - CVE-2023-35078
mitre_attack_id:
    - T1190
    - T1133
product:
    - Splunk Enterprise
    - Splunk Enterprise Security
    - Splunk Cloud
category: web
security_domain: network
tests:
    - name: True Positive Test
      attack_data:
        - data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1190/ivanti/suricata_ivanti_CVE202335078.log
          source: not_applicable
          sourcetype: suricata
      test_type: unit