GHSA-v5rv-hpxg-8x49
Signature validation bypass in ServiceStack
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| NuGet | ServiceStack | < 5.9.2 | 5.9.2 |
Details
As written in the advisory (Markdown source, shown as plain text).
ServiceStack before 5.9.2 mishandles JWT signature verification unless an application has a custom ValidateToken function that establishes a valid minimum length for a signature.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2020-28042
- https://github.com/ServiceStack/ServiceStack/commit/540d4060e877a03ae95343c1a8560a26768585ee
- https://forums.servicestack.net/t/servicestack-v5-9-2-released/8850
- https://snyk.io/vuln/SNYK-DOTNET-SERVICESTACK-1035519
- https://www.nuget.org/packages/ServiceStack
- https://www.shielder.it/advisories/servicestack-jwt-signature-verification-bypass
- https://www.shielder.it/blog/2020/11/re-discovering-a-jwt-authentication-bypass-in-servicestack