CVE-2024-11040
Description
A flaw was found in vLLM. This vulnerability allows a denial of service via the POST endpoints. Enabling use_beam_search with a high best_of value in POST /v1/completions causes the HTTP connection to time out, blocking new completion requests. Supplying invalid inputs to POST /v1/embeddings results in a background loop failure, causing all further requests to return a 500 HTTP error until the vLLM is restarted.
Statement
This CVE has been marked as Rejected by the assigning CNA. The Rejected CVE Record is a duplicate of CVE-2024-8939.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
If an attacker can trigger the allocation of the limited resources, but the number or size of the resources is not controlled, then the most common result is denial of service. This would prevent valid users from accessing the product, and it could potentially have an impact on the surrounding environment, i.e., the product may slow down, crash due to unhandled errors, or lock out legitimate users. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system.
Access Control,Other
Technical Impact: Bypass Protection Mechanism; Other
In some cases it may be possible to force the product to "fail open" in the event of resource exhaustion. The state of the product -- and possibly the security functionality - may then be compromised.
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