DEBIAN-CVE-2019-11727

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2019-11727
Published: 23 Jul 2019, 14:15
Last modified:28 Apr 2026, 20:20

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Jul 2019, 14:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:20
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Systems

  • debian•nss

    < 2:3.45-1 | < 2:3.45-1 | < 2:3.45-1 | < 2:3.45-1

References (1)