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Out-of-bounds Write in SixLabors ImageSharp

High severity GitHub Reviewed Published Mar 6, 2025 in SixLabors/ImageSharp • Updated Mar 6, 2025

Package

nuget SixLabors.ImageSharp (NuGet)

Affected versions

>= 3.0.0, < 3.1.7
< 2.1.10

Patched versions

3.1.7
2.1.10

Description

Impact

An Out-of-bounds Write vulnerability has been found in the ImageSharp gif decoder, allowing attackers to cause a crash using a specially crafted gif. This can potentially lead to denial of service.

Patches

The problem has been patched. All users are advised to upgrade to v3.1.7 or v2.1.10.

Workarounds

None.

References

SixLabors/ImageSharp#2859
SixLabors/ImageSharp#2890

References

@antonfirsov antonfirsov published to SixLabors/ImageSharp Mar 6, 2025
Published to the GitHub Advisory Database Mar 6, 2025
Reviewed Mar 6, 2025
Last updated Mar 6, 2025

Severity

High

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
High

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:H

EPSS score

Weaknesses

CVE ID

CVE-2025-27598

GHSA ID

GHSA-2cmq-823j-5qj8

Source code

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