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.
Vulnerable Library - github.com/dgrijalva/jwt-go-v3.2.0+incompatible
Golang implementation of JSON Web Tokens (JWT)
Library home page: https://proxy.golang.org/github.com/dgrijalva/jwt-go/@v/v3.2.0+incompatible.zip
Found in HEAD commit: 65bcd58cd4b5f086be7b413b47676b24145763de
Vulnerabilities
Details
CVE-2020-26160
### Vulnerable Library - github.com/dgrijalva/jwt-go-v3.2.0+incompatibleGolang implementation of JSON Web Tokens (JWT)
Library home page: https://proxy.golang.org/github.com/dgrijalva/jwt-go/@v/v3.2.0+incompatible.zip
Dependency Hierarchy: - :x: **github.com/dgrijalva/jwt-go-v3.2.0+incompatible** (Vulnerable Library)
Found in HEAD commit: 65bcd58cd4b5f086be7b413b47676b24145763de
Found in base branch: main
### Vulnerability Detailsjwt-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 FixType: Upgrade version
Origin: https://nvd.nist.gov/vuln/detail/CVE-2020-26160
Release Date: 2020-09-30
Fix Resolution: v4.0.0-preview1