CVE-2024-8768: Vllm Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-w2r7-9579-27hf
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CVSS 7.5
CWE-617
Published
Advisory Summary

CVE-2024-8768 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-617: Reachable Assertion) affecting Vllm libraries in the PyPI ecosystem. The issue involves vllm denial of service vulnerability. Remediation is available by upgrading affected packages to version 0.5.5.

CVE-2024-8768 at a Glance

CVE Identifier CVE-2024-8768
GHSA Identifier GHSA-w2r7-9579-27hf
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-617: Reachable Assertion
Affected Product Vllm
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2024-8768

To remediate this vulnerability, upgrade all affected Vllm dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vllm fixed: 0.5.5 
pip install vllm>=0.5.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show vllm

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-8768, inspect your installed packages using pip:

pip show vllm

Analyze the terminal output to locate any version of Vllm in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.5), your application is affected.

Note: The pip show vllm command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-617: Reachable Assertion, where the product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. In Vllm, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A flaw was found in the vLLM library. A completions API request with an empty prompt will crash the vLLM API server, resulting in a denial of service.

CVE-2024-8768 Affected Vllm Versions

1 component(s)
Fixed Versions:
0.5.5
Product / Package Ecosystem Affected Versions Fixed Version
vllm
pypi/vllm
PyPI
< 0.5.5
0.5.5

References

NVD — CVE-2024-8768 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-8768
Vllm Source Repository REPOSITORY
https://github.com/vllm-project/vllm/issues/7632
Vllm Source Repository REPOSITORY
https://github.com/vllm-project/vllm/pull/7746
Security Fix Commit FIX COMMIT
https://github.com/vllm-project/vllm/commit/e25fee57c2e69161bd261f5986dc5aeb198bbd42
Vllm Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2024-8768
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2311895
Vllm Source Repository REPOSITORY
https://github.com/vllm-project/vllm

Frequently Asked Questions

What is CVE-2024-8768?
CVE-2024-8768 is a security vulnerability in Vllm involving vLLM denial of service vulnerability under CWE-617: Reachable Assertion.
Which Vllm versions are affected?
Affected versions include releases prior to 0.5.5 across affected packages: vllm.
What version fixes CVE-2024-8768?
Upgrading to 0.5.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vllm affected?
Yes, vllm is affected in releases prior to 0.5.5. Upgrade your dependency to 0.5.5 or later.
What is the CVSS score of CVE-2024-8768?
CVE-2024-8768 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2024-8768?
CVE-2024-8768 is classified under CWE-617: Reachable Assertion (The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.).
How can I check PyPI dependencies for CVE-2024-8768?
Run the dependency tree command: 'pip show vllm'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-w2r7-9579-27hf",
  "modified" : "2024-09-17T21:32:12Z",
  "published" : "2024-09-17T18:33:26Z",
  "aliases" : [ "CVE-2024-8768" ],
  "summary" : "vLLM denial of service vulnerability",
  "details" : "A flaw was found in the vLLM library. A completions API request with an empty prompt will crash the vLLM API server, resulting in a denial of service.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "vllm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-8768"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/issues/7632"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/pull/7746"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/commit/e25fee57c2e69161bd261f5986dc5aeb198bbd42"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2024-8768"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2311895"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vllm-project/vllm"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-617" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-09-17T21:32:12Z",
    "nvd_published_at" : "2024-09-17T17:15:11Z"
  }
}