RHSA-2020:3280 - Security Advisory

Topic

An update for nss and nspr is now available for Red Hat Enterprise Linux 8.

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.

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 (3.53.1), nspr (4.25.0). (BZ#1809549, BZ#1809550)

Security Fix(es):

• nss: UAF in sftk_FreeSession due to improper refcounting (CVE-2019-11756)
• nss: Check length of inputs for cryptographic primitives (CVE-2019-17006)
• nss: Side channel vulnerabilities during RSA key generation (CVE-2020-12402)
• nss: TLS 1.3 HelloRetryRequest downgrade request sets client into invalid state (CVE-2019-17023)

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.

Bug Fix(es):

• Install of update of nss.x86_64 adds i686 into transaction (BZ#1663187)
• NSS does not set downgrade sentinel in ServerHello.random for TLS 1.0 and TLS 1.1 (BZ#1691409)
• TLS Keying Material Exporter is unsupported by command line tools (BZ#1691454)
• TLS_AES_256_GCM_SHA384 is not marked as FIPS compatible (BZ#1711375)
• Make TLS 1.3 work in FIPS mode (BZ#1724250)
• NSS rejects records with large padding with SHA384 HMAC (BZ#1750921)
• NSS missing IKEv1 Quick Mode KDF (BZ#1809637)
• Name Constraints validation: CN treated as DNS name even when syntactically invalid as DNS name (BZ#1825270)
• FIPS needs nss to restrict valid dh primes to those primes that are approved. (BZ#1854564)
• nss needs to comply to the new SP800-56A rev 3 requirements (BZ#1855825)

Enhancement(s):

• [RFE] nss should use AES for storage of keys (BZ#1723819)

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

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.2 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.2 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.4 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.2 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.4 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux Server - TUS 8.4 x86_64
• Red Hat Enterprise Linux Server - TUS 8.2 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.4 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.4 ppc64le
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.2 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.2 x86_64

Fixes

• BZ - 1663187 - Install of update of nss.x86_64 adds i686 into transaction
• BZ - 1691454 - TLS Keying Material Exporter is unsupported by command line tools
• BZ - 1711375 - TLS_AES_256_GCM_SHA384 is not marked as FIPS compatible
• BZ - 1724250 - Make TLS 1.3 work in FIPS mode [rhel-8]
• BZ - 1750921 - NSS rejects records with large padding with SHA384 HMAC
• BZ - 1774835 - CVE-2019-11756 nss: UAF in sftk_FreeSession due to improper refcounting
• BZ - 1775916 - CVE-2019-17006 nss: Check length of inputs for cryptographic primitives
• BZ - 1791225 - CVE-2019-17023 nss: TLS 1.3 HelloRetryRequest downgrade request sets client into invalid state
• BZ - 1809637 - NSS missing IKEv1 Quick Mode KDF
• BZ - 1825270 - Name Constraints validation: CN treated as DNS name even when syntactically invalid as DNS name
• BZ - 1826231 - CVE-2020-12402 nss: Side channel vulnerabilities during RSA key generation
• BZ - 1854564 - FIPS needs nss to restrict valid dh primes to those primes that are approved. [rhel-8.2.0.z]

CVEs

• CVE-2019-11756
• CVE-2019-17006
• CVE-2019-17023
• CVE-2020-12399
• CVE-2020-12402

References

• https://access.redhat.com/security/updates/classification/#moderate