Name:VMWare Aria Operations Exploit Attempt id:d5d865e4-03e6-43da-98f4-28a4f42d4df7 version:10 date:None author:Michael Haag, Splunk status:production type:TTP 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.
Data_source:
-Palo Alto Network Threat
search:| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime
how_to_implement:To successfully implement this search, you need to be ingesting web or proxy logs, or ensure it is being filled by a proxy like device, into the Web Datamodel. Restrict to specific dest assets to reduce false positives.
known_false_positives:False positives will be present based on gateways in use, modify the status field as needed.
References: -https://nvd.nist.gov/vuln/detail/CVE-2023-20887 -https://viz.greynoise.io/tag/vmware-aria-operations-for-networks-rce-attempt?days=30 -https://github.com/sinsinology/CVE-2023-20887 -https://summoning.team/blog/vmware-vrealize-network-insight-rce-cve-2023-20887/ 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' analytic_story:['VMware Aria Operations vRealize CVE-2023-20887']
