jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2020-26160 - High Severity Vulnerability
Vulnerable Library - github.com/google/certificate-transparency-go-v1.0.21
Auditing for TLS certificates (Go code)
Library home page: https://proxy.golang.org/github.com/google/certificate-transparency-go/@v/v1.0.21.zip
Dependency Hierarchy: - github.com/cloudflare/Cfssl-v1.4.1 (Root Library) - :x: **github.com/google/certificate-transparency-go-v1.0.21** (Vulnerable Library)
Found in HEAD commit: 432a85aa9d4094d52823bdb4be9cf19758df85e1
Found in base branch: main
Vulnerability Details
jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.
Publish Date: 2020-09-30
URL: CVE-2020-26160
CVSS 3 Score Details (7.5)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: None - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://nvd.nist.gov/vuln/detail/CVE-2020-26160
Release Date: 2020-09-30
Fix Resolution: v4.0.0-preview1
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