LoFP LoFP / false positives will be present based on gateways in use, modify the status field as needed.

Techniques

Sample rules

VMWare Aria Operations Exploit Attempt

Description

The following analytic detects potential exploitation attempts against VMWare vRealize Network Insight, specifically targeting the CVE-2023-20887 vulnerability. It monitors web traffic for HTTP POST requests directed at the vulnerable endpoint “/saas./resttosaasservlet.” This detection leverages web traffic data, focusing on specific URL patterns and HTTP methods. Identifying this behavior is crucial for a SOC as it indicates an active exploit attempt. If confirmed malicious, the attacker could execute arbitrary code, leading to unauthorized access, data theft, or further network compromise.

Detection logic


| tstats `security_content_summariesonly`
  count min(_time) as firstTime
        max(_time) as lastTime

FROM datamodel=Web WHERE

Web.url="*/saas./resttosaasservlet*"
Web.http_method=POST
Web.status IN (
    "unknown",
    "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)`

| `vmware_aria_operations_exploit_attempt_filter`