CVE-2024-8939: vLLM Denial of Service via best_of parameter

# CVE-2024-8939: vLLM Denial of Service via best_of parameter

https://gcdradar.vercel.app/incidents/cve-2024-8939-vllm-denial-of-service-via-best-of-parameter · AIR-2024-0166 · closed 2024-09-17

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2024-09-17
- AI role: Attack on AI
- Products: vLLM
- CVE ids: CVE-2024-8939
- CVSS: 6.9

## Summary

An improper handling vulnerability in the vLLM JSON web API allows attackers to cause a denial of service by supplying a large best_of parameter. The API becomes unresponsive due to excessive resource exhaustion.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2024-09-17: CVE-2024-8939: A vulnerability was found in the ilab model serve component, where improper handling of the best_of parameter in the vllm JSON… (https://nvd.nist.gov/vuln/detail/CVE-2024-8939)
- 2024-09-17: CVE-2024-8939: vLLM Denial of Service via the best_of parameter (https://github.com/advisories/GHSA-wc36-9694-f9rf)

## Sources

- 2024-09-17 GitHub Advisory Database: CVE-2024-8939: vLLM Denial of Service via the best_of parameter https://github.com/advisories/GHSA-wc36-9694-f9rf
- 2024-09-17 NVD: CVE-2024-8939: A vulnerability was found in the ilab model serve component, where improper handling of the best_of parameter in the vllm JSON… https://nvd.nist.gov/vuln/detail/CVE-2024-8939

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.