CVE-2026-50149: projectcontour contour, слаба криптография

Описание

Оригинално описание

Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virtualhost.jwtProviders`, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SNI (one that does not match any `HTTPProxy` FQDN) bypass configured JWT verification and are proxied to upstream services without a valid token. This issue is fixed in Contour v1.33.5. Contour now rejects and marks invalid any `HTTPProxy` resources that combine `.spec.virtualhost.tls.enableFallbackCertificate: true` with `.spec.virtualhost.jwtProviders`. Affected resources will receive a status condition with the error reason `TLSIncompatibleFeatures`. As a workaround, do not enable `.spec.virtualhost.tls.enableFallbackCertificate` on `HTTPProxy` resources that also define `.spec.virtualhost.jwtProviders`. Remove one of the two settings to avoid the invalid configuration.

Засегнати продукти

• projectcontour contour: >= 1.23.0, < 1.33.5

Вид слабост

• CWE-295 Неправилна валидация на сертификат

История

Други уязвимости в projectcontour contour

• 8.1CVE-2026-41246
• 9.8CVE-2024-36539
• 8.5CVE-2021-32783
• 7.5CVE-2020-15127

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-50149
• https://nvd.nist.gov/vuln/detail/CVE-2026-50149
• https://github.com/projectcontour/contour/security/advisories/GHSA-g3xr-5w5j-w4q4