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SixLabors.ImageSharp vulnerable to Memory Allocation with Excessive Size Value

Moderate severity GitHub Reviewed Published Apr 15, 2024 in SixLabors/ImageSharp • Updated Apr 15, 2024

Package

nuget SixLabors.ImageSharp (NuGet)

Affected versions

< 2.1.8
>= 3.0.0, < 3.1.4

Patched versions

2.1.8
3.1.4

Description

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

References

@JimBobSquarePants JimBobSquarePants published to SixLabors/ImageSharp Apr 15, 2024
Published by the National Vulnerability Database Apr 15, 2024
Published to the GitHub Advisory Database Apr 15, 2024
Reviewed Apr 15, 2024
Last updated Apr 15, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.046%
(18th percentile)

Weaknesses

CVE ID

CVE-2024-32035

GHSA ID

GHSA-g85r-6x2q-45w7

Source code

Credits

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