A vulnerability was found in the ilab model serve component, where improper handling of the best_of parameter in the vllm JSON web API can lead to a Denial of Service (DoS). The API used for LLM-based sentence or chat completion accepts a best_of parameter to return the best completion from several options. When this parameter is set to a large value, the API does not handle timeouts or resource exhaustion properly, allowing an attacker to cause a DoS by consuming excessive system resources. This leads to the API becoming unresponsive, preventing legitimate users from accessing the service.

Red Hat, Inc. AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Red Hat, Inc. CWE-400

Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2024-8939 [No types assigned]

Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2312782 [No types assigned]