CVE-2019-11727

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 v3.0 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2019-21/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1552208	Issue Tracking Permissions Required Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:1951
https://security.gentoo.org/glsa/201908-12
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00006.html

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Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Information

Published : 2019-07-23 07:15

Updated : 2019-07-30 16:15

NVD link : CVE-2019-11727

Mitre link : CVE-2019-11727

JSON object : View

CWE

CWE-295

Improper Certificate Validation

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Products Affected

mozilla

firefox

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