CVE-2019-11727

medium

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.

References

Advisories
More

https://security.gentoo.org/glsa/201908-12

https://access.redhat.com/errata/RHSA-2019:1951

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html

https://www.mozilla.org/security/advisories/mfsa2019-21/

https://bugzilla.mozilla.org/show_bug.cgi?id=1552208

Details

Source: Mitre, NVD

Published: 2019-07-23

Updated: 2019-07-30

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00123