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CVE-2017-20146 — Vulnerability in github.com/gorilla/handlers —...

CRITICAL

gorilla/handlers may allow requester to bypass expected behavior of the Same Origin Policy

Published December 28, 2022Updated November 8, 2023Source: osv

Summary

Usage of the CORS handler may apply improper CORS headers, allowing the requester to explicitly control the value of the Access-Control-Allow-Origin header, which bypasses the expected behavior of the Same Origin Policy.

Advisory Timeline

  • First published December 28, 2022 (1385 days ago).
  • Last revised November 8, 2023 — 315 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Go
Update github.com/gorilla/handlers to 1.3.0 or later
go get github.com/gorilla/handlers@v1.3.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
github.com/gorilla/handlers
go
All versions1.3.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-346
    Origin Validation ErrorMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2017-20146?
gorilla/handlers may allow requester to bypass expected behavior of the Same Origin Policy This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2017-20146?
CVE-2017-20146 affects github.com/gorilla/handlers. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-20146 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-jcr6-mmjj-pchw
GO-2020-0020

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