CVE-2024-9056: Bentoml Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-hw8j-hw49-752c
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CVSS 7.5
CWE-400 CWE-770
Published
Advisory Summary

CVE-2024-9056 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Bentoml libraries in the PyPI ecosystem. The issue involves bentoml denial of service (dos) via multipart boundary. Remediation is available in the latest vendor maintenance releases.

CVE-2024-9056 at a Glance

CVE Identifier CVE-2024-9056
GHSA Identifier GHSA-hw8j-hw49-752c
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Bentoml
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:3.0/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-2024-9056

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

bentoml fixed: Latest secure release 
pip install bentoml>=Latest secure release
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 bentoml

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-9056, inspect your installed packages using pip:

pip show bentoml

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

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Bentoml, 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

BentoML version v1.3.4post1 is vulnerable to a Denial of Service (DoS) attack. The vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. This causes the server to continuously process each character, leading to excessive resource consumption and rendering the service unavailable. The issue is unauthenticated and does not require any user interaction, impacting all users of the service.

CVE-2024-9056 Affected Bentoml Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
bentoml
pypi/bentoml
PyPI
≤ 1.4.5

References

NVD — CVE-2024-9056 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-9056
Bentoml Source Repository REPOSITORY
https://github.com/bentoml/BentoML
Bentoml Source Repository REPOSITORY
https://github.com/bentoml/BentoML/blob/a6f5f937be6ec278f3d4f3bbc6f3c8f9564820d7/src/bentoml/_internal/io_descriptors/file.py#L293
Bentoml Source Repository REPOSITORY
https://github.com/bentoml/BentoML/blob/v1.4.5/src/bentoml/_internal/io_descriptors/file.py#L293C9-L293C66
huntr.com/bounties/a24a13c2-0... WEB
https://huntr.com/bounties/a24a13c2-0300-4a95-b26a-ac7fe8f6521b

Frequently Asked Questions

What is CVE-2024-9056?
CVE-2024-9056 is a security vulnerability in Bentoml involving BentoML Denial of Service (DoS) via Multipart Boundary under CWE-400: Uncontrolled Resource Consumption.
Which Bentoml versions are affected?
Affected versions include releases prior to current release patches across affected packages: bentoml.
What version fixes CVE-2024-9056?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is bentoml affected?
Yes, bentoml is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2024-9056?
CVE-2024-9056 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2024-9056?
CVE-2024-9056 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check PyPI dependencies for CVE-2024-9056?
Run the dependency tree command: 'pip show bentoml'. 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-hw8j-hw49-752c",
  "modified" : "2025-03-21T03:36:02Z",
  "published" : "2025-03-20T12:32:50Z",
  "aliases" : [ "CVE-2024-9056" ],
  "summary" : "BentoML Denial of Service (DoS) via Multipart Boundary",
  "details" : "BentoML version v1.3.4post1 is vulnerable to a Denial of Service (DoS) attack. The vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. This causes the server to continuously process each character, leading to excessive resource consumption and rendering the service unavailable. The issue is unauthenticated and does not require any user interaction, impacting all users of the service.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "bentoml"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.4.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-9056"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/bentoml/BentoML"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/bentoml/BentoML/blob/a6f5f937be6ec278f3d4f3bbc6f3c8f9564820d7/src/bentoml/_internal/io_descriptors/file.py#L293"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/bentoml/BentoML/blob/v1.4.5/src/bentoml/_internal/io_descriptors/file.py#L293C9-L293C66"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/a24a13c2-0300-4a95-b26a-ac7fe8f6521b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-770" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-21T03:36:02Z",
    "nvd_published_at" : "2025-03-20T10:15:46Z"
  }
}