{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/fortinac/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":["FortiNAC"],"_cs_severities":["critical"],"_cs_tags":["fortinet","fortinac","cve-2022-39952","rce","web-exploit"],"_cs_type":"threat","_cs_vendors":["Fortinet"],"content_html":"\u003cp\u003eCVE-2022-39952 is a critical vulnerability affecting Fortinet FortiNAC, allowing for remote code execution. Exploitation involves sending a specially crafted HTTP POST request to the \u003ccode\u003e/configWizard/keyUpload.jsp\u003c/code\u003e endpoint. This vulnerability allows an unauthenticated attacker to upload arbitrary files, leading to code execution on the underlying system. Successful exploitation grants the attacker a foothold in the network, enabling further malicious activities. Public proof-of-concept exploits are readily available, making this a high-risk vulnerability for organizations using FortiNAC. The vulnerability was actively exploited following its disclosure. This activity can also be related to the Hellcat Ransomware.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable FortiNAC instance exposed to the internet.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP POST request targeting the \u003ccode\u003e/configWizard/keyUpload.jsp\u003c/code\u003e endpoint.\u003c/li\u003e\n\u003cli\u003eThe POST request includes a \u003ccode\u003epayload.zip\u003c/code\u003e file containing a malicious payload, such as a JSP webshell.\u003c/li\u003e\n\u003cli\u003eThe FortiNAC server processes the request without proper validation, allowing the malicious file to be uploaded to a writeable directory.\u003c/li\u003e\n\u003cli\u003eThe attacker then accesses the uploaded JSP webshell via a web browser by requesting the file path.\u003c/li\u003e\n\u003cli\u003eThe webshell executes arbitrary commands on the FortiNAC server, granting the attacker remote code execution.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the gained access to schedule malicious tasks and establish persistence.\u003c/li\u003e\n\u003cli\u003eThe attacker establishes a command and control (C2) channel to maintain control and exfiltrate sensitive data or deploy ransomware.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2022-39952 can lead to complete compromise of the FortiNAC system. An attacker can gain unauthorized access to sensitive network configurations, user credentials, and other critical data. This can result in significant data breaches, service disruptions, and potential financial losses. The affected sectors are broad, encompassing any organization using Fortinet FortiNAC. If the attacker deploys ransomware, the organization will face data encryption, extortion demands, and potential reputational damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect Fortinet FortiNAC CVE-2022-39952 Exploitation Attempt\u003c/code\u003e to identify exploitation attempts based on the URI and HTTP method.\u003c/li\u003e\n\u003cli\u003eInspect web server logs for HTTP POST requests to \u003ccode\u003e/configWizard/keyUpload.jsp\u003c/code\u003e to identify potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for connections to newly created files in web directories which could indicate successful exploitation.\u003c/li\u003e\n\u003cli\u003eApply the latest Fortinet patches to remediate CVE-2022-39952 on all FortiNAC appliances immediately.\u003c/li\u003e\n\u003cli\u003eEnable Web Application Firewall (WAF) rules to filter out malicious requests targeting \u003ccode\u003e/configWizard/keyUpload.jsp\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eReview and restrict access to the FortiNAC management interface to only authorized personnel and networks.\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-fortinet-fortinac-cve-2022-39952/","summary":"An attacker attempts to exploit the Fortinet FortiNAC CVE-2022-39952 vulnerability by sending a malicious HTTP POST request to upload a payload, potentially leading to remote code execution.","title":"Fortinet FortiNAC CVE-2022-39952 Exploitation Attempt","url":"https://feed.craftedsignal.io/briefs/2024-01-fortinet-fortinac-cve-2022-39952/"}],"language":"en","title":"CraftedSignal Threat Feed - Fortinac","version":"https://jsonfeed.org/version/1.1"}