CVE-2024-32035: SixLabors.ImageSharp SixLabors.ImageSharp Vulnerable To Memory Allocation Vulnerability

MODERATE
Advisory Identifier: GHSA-g85r-6x2q-45w7
CVSS 5.3
CWE-789 CWE-770
Published
Advisory Summary

CVE-2024-32035 is a MODERATE (CVSS 5.3) sixlabors.imagesharp vulnerable to memory allocation vulnerability (CWE-789: Memory Allocation with Excessive Size Value) affecting SixLabors.ImageSharp libraries in the NuGet ecosystem. The issue involves sixlabors.imagesharp vulnerable to memory allocation with excessive size value. Remediation is available by upgrading affected packages to version 2.1.8, 3.1.4.

CVE-2024-32035 at a Glance

CVE Identifier CVE-2024-32035
GHSA Identifier GHSA-g85r-6x2q-45w7
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-789: Memory Allocation with Excessive Size Value
Affected Product SixLabors.ImageSharp
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix CVE-2024-32035

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

SixLabors.ImageSharp fixed: 2.1.8
Upgrade SixLabors.ImageSharp to 2.1.8
SixLabors.ImageSharp fixed: 3.1.4
Upgrade SixLabors.ImageSharp to 3.1.4
Verify Direct and Transitive Dependencies

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

inspect dependencies for SixLabors.ImageSharp

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-32035, inspect your project dependencies for SixLabors.ImageSharp:

inspect dependencies for SixLabors.ImageSharp

Analyze the terminal output to locate any version of SixLabors.ImageSharp in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.8), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-789: Memory Allocation with Excessive Size Value, where the product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. In SixLabors.ImageSharp, 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

### Impact A vulnerability discovered in the ImageSharp library, where the processing of specially crafted files can lead to excessive memory usage in image decoders. The vulnerability is triggered when ImageSharp attempts to process image files that are designed to exploit this flaw. This flaw can be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on ImageSharp for image processing tasks. Users and administrators are advised to update to the latest version of ImageSharp that addresses this vulnerability to mitigate the risk of exploitation. ### Patches The problem has been patched. All users are advised to upgrade to v3.1.4 or v2.1.8. ### Workarounds Before calling `Image.Decode(Async)`, use `Image.Identify` to determine the image dimensions in order to enforce a limit. ### References - ImageSharp: [Security Considerations](https://docs.sixlabors.com/articles/imagesharp/security.html) - ImageSharp.Web: [Securing Processing Commands](https://docs.sixlabors.com/articles/imagesharp.web/processingcommands.html#securing-processing-commands)

CVE-2024-32035 Affected SixLabors.ImageSharp Versions

2 component(s)
Fixed Versions:
2.1.83.1.4
Product / Package Ecosystem Affected Versions Fixed Version
SixLabors.ImageSharp
NuGet
< 2.1.8
2.1.8
SixLabors.ImageSharp
NuGet
≥ 3.0.0
< 3.1.4
3.1.4

References

Frequently Asked Questions

What is CVE-2024-32035?
CVE-2024-32035 is a security vulnerability in SixLabors.ImageSharp involving SixLabors.ImageSharp vulnerable to Memory Allocation with Excessive Size Value under CWE-789: Memory Allocation with Excessive Size Value.
Which SixLabors.ImageSharp versions are affected?
Affected versions include releases prior to 2.1.8, 3.1.4 across affected packages: SixLabors.ImageSharp.
What version fixes CVE-2024-32035?
Upgrading to 2.1.8, 3.1.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is SixLabors.ImageSharp affected?
Yes, SixLabors.ImageSharp is affected in releases prior to 2.1.8, 3.1.4. Upgrade your dependency to 2.1.8, 3.1.4 or later.
What is the CVSS score of CVE-2024-32035?
CVE-2024-32035 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2024-32035?
CVE-2024-32035 is classified under CWE-789: Memory Allocation with Excessive Size Value (The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.).
How can I check NuGet dependencies for CVE-2024-32035?
Run the dependency tree command: 'inspect dependencies for SixLabors.ImageSharp'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g85r-6x2q-45w7",
  "modified" : "2025-01-09T22:04:41Z",
  "published" : "2024-04-15T20:22:54Z",
  "aliases" : [ "CVE-2024-32035" ],
  "summary" : "SixLabors.ImageSharp vulnerable to Memory Allocation with Excessive Size Value",
  "details" : "### Impact\n\nA vulnerability discovered in the ImageSharp library, where the processing of specially crafted files can lead to excessive memory usage in image decoders. The vulnerability is triggered when ImageSharp attempts to process image files that are designed to exploit this flaw. \n\nThis flaw can be exploited to cause a denial of service (DoS) by depleting process memory, thereby affecting applications and services that rely on ImageSharp for image processing tasks. Users and administrators are advised to update to the latest version of ImageSharp that addresses this vulnerability to mitigate the risk of exploitation.\n\n### Patches\n\nThe problem has been patched. All users are advised to upgrade to v3.1.4 or v2.1.8.\n\n### Workarounds\n\nBefore calling `Image.Decode(Async)`, use `Image.Identify` to determine the image dimensions in order to enforce a limit.\n\n### References\n\n- ImageSharp: [Security Considerations](https://docs.sixlabors.com/articles/imagesharp/security.html)\n- ImageSharp.Web: [Securing Processing Commands](https://docs.sixlabors.com/articles/imagesharp.web/processingcommands.html#securing-processing-commands)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "SixLabors.ImageSharp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.8"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "SixLabors.ImageSharp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.1.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-g85r-6x2q-45w7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-32035"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SixLabors/ImageSharp/commit/b6b08ac3e7cea8da5ac1e90f7c0b67dd254535c3"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SixLabors/ImageSharp/commit/f21d64188e59ae9464ff462056a5e29d8e618b27"
  }, {
    "type" : "WEB",
    "url" : "https://docs.sixlabors.com/articles/imagesharp.web/processingcommands.html#securing-processing-commands"
  }, {
    "type" : "WEB",
    "url" : "https://docs.sixlabors.com/articles/imagesharp/security.html"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/SixLabors/ImageSharp"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770", "CWE-789" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-15T20:22:54Z",
    "nvd_published_at" : "2024-04-15T20:15:11Z"
  }
}