GitHub Advisoryadvisory · Go
GHSA-w73w-5m7g-f7qc Authorization bypass in github.com/dgrijalva/jwt-go
HIGH
Official page ↗
- Aliases
- CVE-2020-26160
- Ecosystem
- Go
- Packages
- github.com/dgrijalva/jwt-go, github.com/dgrijalva/jwt-go/v4
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-287, CWE-755
- Reviewed
- 2021-05-18
Affected packages
• Go github.com/dgrijalva/jwt-go: >= 0.0.0-20150717181359-44718f8a89b0, <= 3.2.0 (no fix yet)
• Go github.com/dgrijalva/jwt-go/v4: < 4.0.0-preview1 → fixed in 4.0.0-preview1
Description
jwt-go 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. There is no patch available and users of jwt-go are advised to migrate to golang-jwt at version 3.2.1
Related
Alias · CVE (1)
- CVE-2020-26160 jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is… vulnerability
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-26160 advisory
- https://github.com/dgrijalva/jwt-go/issues/422 web
- https://github.com/dgrijalva/jwt-go/issues/462 web
- https://github.com/dgrijalva/jwt-go/pull/426 web
- https://github.com/dgrijalva/jwt-go/commit/ec0a89a131e3e8567adcb21254a5cd20a70ea4ab web
- https://github.com/dgrijalva/jwt-go package
- https://pkg.go.dev/vuln/GO-2020-0017 web
- https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515 web