4.3 - RHSA-2019:2237

Problem Description:

An update for nss, nss-softokn, nss-util, and nspr is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Network Security Services (NSS) is a set of libraries designed to support the cross-platform development of security-enabled client and server applications.

Netscape Portable Runtime (NSPR) provides platform independence for non-GUI operating system facilities.

The following packages have been upgraded to a later upstream version: nss (3.44.0), nss-softokn (3.44.0), nss-util (3.44.0), nspr (4.21.0). (BZ#1645231, BZ#1692269, BZ#1692271, BZ#1692274)

Security Fix(es):

* ROHNP: Key Extraction Side Channel in Multiple Crypto Libraries (CVE-2018-0495)

* nss: Cache side-channel variant of the Bleichenbacher attack (CVE-2018-12404)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, applications using nss or nspr (for example, Firefox) must be restarted for this update to take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1144186 - Cannot delete orphan private keys with certutil. 1212132 - Support for IKE/IPsec typical PKIX usage so libreswan can use nss without rejecting certs based on EKU 1431241 - Fully implement verification of RSA-PSS keys in certificates in tstclnt and selfserv [rhel-7] 1444136 - move NSS signtool to the unsupported tools in RHEL 7.6 1455288 - TLS 1.3 handshake fails with SSL_REQUIRE_SAFE_NEGOTIATION on 1508571 - Exporting RSA-PSS keys to PKCS#12 drops the rsa-pss identifier from them [rhel-7] 1508595 - Regression in handling unknown signature algorithms extensions 1509045 - selfserv refuses to use rsa-pss keys [rhel-7] 1509396 - RFC 5246 non compliance with CertificateVerify fallback to SHA-1 [rhel-7] 1510156 - RSA PKCS#1 v1.5 signatures made using rsa-pss keys are accepted as valid [rhel-7] 1514041 - certutil -O output isn't precise when the input is an ambiguous nickname used by multiple certificates 1533729 - [RFE] certutil capability: generate CSR from orphan private key 1538081 - Policy does not apply to MGF1 hash in RSA-PSS signatures [rhel-7] 1591163 - CVE-2018-0495 ROHNP: Key Extraction Side Channel in Multiple Crypto Libraries 1639873 - mod_nss - TLS Session ID is still not maintained (ref bz 1461580) 1657164 - `certutil -u I` is not documented 1657913 - CVE-2018-12404 nss: Cache side-channel variant of the Bleichenbacher attack 1670239 - libpkix name constraints check treats CN as DNS name when it should not 1712876 - post handshake authentication with selfserv does not work if SSL_ENABLE_SESSION_TICKETS is set [rhel-7]