{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/vendors/crushftp/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2024-4040"}],"_cs_exploited":true,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["CrushFTP Server"],"_cs_severities":["critical"],"_cs_tags":["crushftp","ssti","cve-2024-4040"],"_cs_type":"threat","_cs_vendors":["CrushFTP"],"content_html":"\u003cp\u003eThe CVE-2024-4040 vulnerability is a server-side template injection flaw affecting CrushFTP versions up to 10.7.1 and 11.1.0. Discovered in April 2024, this vulnerability allows unauthenticated remote attackers to bypass the VFS Sandbox, potentially gaining access to sensitive files and executing arbitrary commands on the affected server. The vulnerability stems from improper handling of template processing, enabling attackers to inject malicious code into server-side templates. Successful exploitation can lead to complete system compromise, data breaches, and disruption of services. Publicly available exploits exist, making this a high-risk vulnerability that requires immediate patching. This activity is detected by analyzing CrushFTP session logs for specific exploitation patterns, focusing on HTTP requests containing malicious template injection payloads.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn unauthenticated attacker sends a malicious HTTP request to a CrushFTP server.\u003c/li\u003e\n\u003cli\u003eThe request contains a crafted payload designed to exploit the server-side template injection vulnerability (CVE-2024-4040).\u003c/li\u003e\n\u003cli\u003eThe CrushFTP server processes the malicious payload without proper sanitization, interpreting it as a template directive.\u003c/li\u003e\n\u003cli\u003eThe injected template code allows the attacker to read files outside the VFS sandbox.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the file read capability to obtain sensitive information such as configuration files or user credentials.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts further requests to execute arbitrary commands on the server.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the executed commands to establish persistence or move laterally within the network.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves complete system compromise, potentially leading to data exfiltration or ransomware deployment.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2024-4040 allows attackers to gain unauthorized access to sensitive data, execute arbitrary commands, and potentially compromise the entire CrushFTP server. This can lead to data breaches, service disruption, and financial losses. While specific victim numbers are not available in the provided context, the broad install base of CrushFTP suggests a potentially wide impact across various sectors. The vulnerability is easily exploitable, amplifying the risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patches for CrushFTP versions up to 10.7.1 and 11.1.0 to address CVE-2024-4040 immediately.\u003c/li\u003e\n\u003cli\u003eDeploy the provided Sigma rules to your SIEM to detect ongoing exploitation attempts by monitoring CrushFTP session logs.\u003c/li\u003e\n\u003cli\u003eIngest CrushFTP session logs to your SIEM to enable detection of the exploitation attempts (CrushFTP data source).\u003c/li\u003e\n\u003cli\u003eReview and restrict network access to CrushFTP servers to limit the attack surface (network security domain).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-11-14T12:00:00Z","date_published":"2024-11-14T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-11-crushftp-ssti/","summary":"Exploitation of CVE-2024-4040, a server-side template injection vulnerability in CrushFTP, allows unauthenticated remote attackers to access files, circumvent authentication, and execute arbitrary commands.","title":"CrushFTP Server-Side Template Injection Exploitation","url":"https://feed.craftedsignal.io/briefs/2024-11-crushftp-ssti/"}],"language":"en","title":"CraftedSignal Threat Feed - CrushFTP","version":"https://jsonfeed.org/version/1.1"}