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pyth0n1c
79 lines
3.7 KiB
YAML
79 lines
3.7 KiB
YAML
name: WordPress Bricks Builder plugin RCE
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id: 56a8771a-3fda-4959-b81d-2f266e2f679f
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version: 4
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date: '2024-11-15'
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author: Michael Haag, Splunk
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data_source:
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- Nginx Access
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type: TTP
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status: production
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description: The following analytic identifies potential exploitation of the WordPress
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Bricks Builder plugin RCE vulnerability. It detects HTTP POST requests to the URL
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path "/wp-json/bricks/v1/render_element" with a status code of 200, leveraging the
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Web datamodel. This activity is significant as it indicates an attempt to exploit
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CVE-2024-25600, a known vulnerability that allows remote code execution. If confirmed
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malicious, an attacker could execute arbitrary commands on the target server, leading
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to potential full system compromise and unauthorized access to sensitive data.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time)
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as lastTime from datamodel=Web where Web.url IN ("*/wp-json/bricks/v1/render_element")
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Web.status=200 Web.http_method=POST by Web.src, Web.dest, Web.http_user_agent, Web.url,
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Web.uri_path, Web.status, Web.http_method, sourcetype, source | `drop_dm_object_name("Web")`
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| `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `wordpress_bricks_builder_plugin_rce_filter`'
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how_to_implement: The search is based on data in the Web datamodel and was modeled
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from NGINX logs. Ensure that the Web datamodel is accelerated and that the data
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source for the Web datamodel is properly configured. If using other web sources,
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modify they query, or review the data, as needed.
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known_false_positives: False positives may be possible, however we restricted it to
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HTTP Status 200 and POST requests, based on the POC. Upon investigation review the
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POST body for the actual payload - or command - being executed.
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references:
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- https://attack.mitre.org/techniques/T1190
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- https://github.com/Tornad0007/CVE-2024-25600-Bricks-Builder-plugin-for-WordPress/blob/main/exploit.py
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- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-25600
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- https://op-c.net/blog/cve-2024-25600-wordpresss-bricks-builder-rce-flaw-under-active-exploitation/
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- https://thehackernews.com/2024/02/wordpress-bricks-theme-under-active.html
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drilldown_searches:
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- name: View the detection results for - "$dest$"
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search: '%original_detection_search% | search dest = "$dest$"'
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earliest_offset: $info_min_time$
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latest_offset: $info_max_time$
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- name: View risk events for the last 7 days for - "$dest$"
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search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$dest$")
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starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime
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values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories)
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as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic)
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as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`'
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earliest_offset: $info_min_time$
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latest_offset: $info_max_time$
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rba:
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message: Potential exploitation of the WordPress Bricks Builder plugin RCE vulnerability
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on $dest$ by $src$.
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risk_objects:
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- field: dest
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type: system
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score: 100
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threat_objects:
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- field: src
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type: ip_address
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tags:
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analytic_story:
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- WordPress Vulnerabilities
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asset_type: Web Server
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mitre_attack_id:
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- T1190
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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security_domain: network
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cve:
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- CVE-2024-25600
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tests:
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- name: True Positive Test
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attack_data:
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- data:
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https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1190/wordpress/bricks_cve_2024_25600.log
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source: nginx:plus:kv
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sourcetype: nginx:plus:kv
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