CVE-2020-28042

Description

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.

Affected packages (1)

• NuGet/ServiceStackfrom 0, < 5.9.2

References (7)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-28042
• WEBhttps://forums.servicestack.net/t/servicestack-v5-9-2-released/8850
• WEBhttps://github.com/ServiceStack/ServiceStack/commit/540d4060e877a03ae95343c1a8560a26768585ee
• WEBhttps://snyk.io/vuln/SNYK-DOTNET-SERVICESTACK-1035519
• WEBhttps://www.nuget.org/packages/ServiceStack
• WEBhttps://www.shielder.it/advisories/servicestack-jwt-signature-verification-bypass
• WEBhttps://www.shielder.it/blog/2020/11/re-discovering-a-jwt-authentication-bypass-in-servicestack