VULNERABILITY INTELLIGENCE

CVE-2019-11727

CVSS score5.3 MEDIUM
EPSS probability1.81%
CISA KEVNot currently listed
Published2019-07-23
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Weakness classification

  • nvd@nist.gov: CWE-295

Primary references