{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2023-20887/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Aria Operations","vRealize Network Insight"],"_cs_severities":["critical"],"_cs_tags":["vmware","cve-2023-20887","exploit"],"_cs_type":"advisory","_cs_vendors":["VMware"],"content_html":"\u003cp\u003eThis threat brief focuses on potential exploitation attempts targeting CVE-2023-20887 in VMware Aria Operations (formerly vRealize Network Insight). This vulnerability allows for arbitrary code execution. The observed activity involves HTTP POST requests directed at the \u003ccode\u003e/saas./resttosaasservlet\u003c/code\u003e endpoint. Successful exploitation could lead to complete system compromise, data theft, and further lateral movement within the network. This activity began gaining significant traction in early 2023, with proof-of-concept exploits becoming publicly available. Defenders should prioritize patching and monitoring for related network traffic.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable VMware Aria Operations instance exposed to the internet.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP POST request targeting the \u003ccode\u003e/saas./resttosaasservlet\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe crafted request exploits CVE-2023-20887, bypassing authentication and authorization controls.\u003c/li\u003e\n\u003cli\u003eThe vulnerability allows the attacker to inject arbitrary code into the server-side application.\u003c/li\u003e\n\u003cli\u003eThe injected code executes with the privileges of the vulnerable application, typically SYSTEM or root.\u003c/li\u003e\n\u003cli\u003eThe attacker establishes a reverse shell connection to an external attacker-controlled server.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the reverse shell for post-exploitation activities, such as credential harvesting and lateral movement.\u003c/li\u003e\n\u003cli\u003eThe ultimate objective is to exfiltrate sensitive data or deploy ransomware across the network.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2023-20887 allows unauthenticated attackers to execute arbitrary code on affected VMware Aria Operations systems. This can lead to a complete compromise of the affected system, including data theft, denial of service, and the potential to use the compromised system as a pivot point for further attacks within the network. Public reports indicate widespread scanning activity targeting this vulnerability.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eVMware Aria Operations Exploit Attempt - HTTP POST\u003c/code\u003e to detect malicious HTTP POST requests to the vulnerable endpoint, focusing on web server logs (category: \u003ccode\u003ewebserver\u003c/code\u003e, product: \u003ccode\u003elinux\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003eInspect web server logs for HTTP POST requests to \u003ccode\u003e/saas./resttosaasservlet\u003c/code\u003e with a 200 status code, as this is an indicator of potential successful exploitation.\u003c/li\u003e\n\u003cli\u003eApply the latest patches for VMware Aria Operations to remediate CVE-2023-20887 as referenced in the provided links.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for outbound connections originating from VMware Aria Operations servers, particularly connections to unusual or suspicious destinations.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the impact of a successful compromise, preventing lateral movement to other critical systems.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T10:00:00Z","date_published":"2024-01-03T10:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-vmware-aria-exploit/","summary":"Detection of potential exploitation attempts against VMware Aria Operations (formerly vRealize Network Insight) by monitoring for HTTP POST requests to the /saas./resttosaasservlet endpoint, indicative of CVE-2023-20887 exploitation leading to arbitrary code execution.","title":"VMware Aria Operations CVE-2023-20887 Exploitation Attempt","url":"https://feed.craftedsignal.io/briefs/2024-01-vmware-aria-exploit/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2023-20887","version":"https://jsonfeed.org/version/1.1"}