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CVE-2019-11727 A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with…

Description

A vulnerability exists where it possible to force Network Security Services (NSS) to sign CertificateVerify with PKCS#1 v1.5 signatures when those are the only ones advertised by server in CertificateRequest in TLS 1.3. PKCS#1 v1.5 signatures should not be used for TLS 1.3 messages. This vulnerability affects Firefox < 68.

Affected products and versions

Product Affected versions Fixed in
Firefox 68 earliest → < 68 68

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