{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/model-injection/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":["Ollama Server"],"_cs_severities":["critical"],"_cs_tags":["ollama","rce","model-injection"],"_cs_type":"advisory","_cs_vendors":["Ollama"],"content_html":"\u003cp\u003eThis brief addresses a critical vulnerability in Ollama servers that could lead to remote code execution (RCE). The threat involves attackers attempting to load malicious models onto the server to execute arbitrary code. This is achieved by exploiting vulnerabilities in the model loading process or by injecting specially crafted models designed to trigger server errors and allow code execution. The detection focuses on identifying unusual error patterns during model loading, such as crashes, failures related to \u0026quot;llama runner,\u0026quot; and model-specific errors. This activity may originate from an external threat actor or a malicious insider attempting to compromise the Ollama server. Successful exploitation allows the attacker to gain full control of the server.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies an Ollama server with accessible model loading functionality.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious model or exploits an existing model.\u003c/li\u003e\n\u003cli\u003eThe attacker initiates a model loading request to the Ollama server.\u003c/li\u003e\n\u003cli\u003eThe Ollama server attempts to load the model.\u003c/li\u003e\n\u003cli\u003eThe malicious model triggers an error within the llama runner component or the model processing logic.\u003c/li\u003e\n\u003cli\u003eThe error leads to a service crash or code execution due to vulnerabilities in the model loader.\u003c/li\u003e\n\u003cli\u003eThe attacker gains remote code execution on the Ollama server.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful attack can lead to complete compromise of the Ollama server. The attacker gains the ability to execute arbitrary code, potentially leading to data exfiltration, denial of service, or further lateral movement within the network. The risk is heightened due to the potential for sensitive data stored or processed by the Ollama server to be exposed or manipulated. The number of victims and specific sectors targeted are unknown, but the impact is potentially widespread given the increasing adoption of Ollama servers.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the \u003ccode\u003eOllama Possible RCE via Model Loading\u003c/code\u003e Sigma rule to your SIEM to detect suspicious model loading errors on Ollama servers.\u003c/li\u003e\n\u003cli\u003eReview and harden the Ollama server configuration to restrict model loading permissions and validate model integrity.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation to limit the impact of a compromised Ollama server.\u003c/li\u003e\n\u003cli\u003eInvestigate any detected instances of model loading errors and potential RCE attempts based on the Sigma rule output.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-03-ollama-rce/","summary":"The detection identifies potential remote code execution attempts on Ollama servers through malicious model loading by monitoring error messages and failure patterns during model loading operations, which could indicate malicious model injection, path traversal attempts, or exploitation of model loading mechanisms, leading to arbitrary code execution on the server.","title":"Ollama Server Possible RCE via Malicious Model Loading","url":"https://feed.craftedsignal.io/briefs/2024-01-03-ollama-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - Model-Injection","version":"https://jsonfeed.org/version/1.1"}