RHSA-2021:1384 - Security Advisory

Topic

An update for nss 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.

Description

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

Security Fix(es):

• nss: TLS 1.3 CCS flood remote DoS Attack (CVE-2020-25648)

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):

• FTBFS: Paypal Cert expired (BZ#1883973)
• FTBFS: IKE CLASS_1563 fails gtest (BZ#1884793)
• Cannot compile code with nss headers and -Werror=strict-prototypes (BZ#1885321)
• CA HSM ncipher token disabled after RHEL-7.9 update (BZ#1932193)

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.

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 1883973 - FTBFS: Paypal Cert expired [rhel-7.9.z]
• BZ - 1884793 - FTBFS: IKE CLASS_1563 fails gtest [rhel-7.9.z]
• BZ - 1885321 - Cannot compile code with nss headers and -Werror=strict-prototypes
• BZ - 1887319 - CVE-2020-25648 nss: TLS 1.3 CCS flood remote DoS Attack

CVEs

• CVE-2020-25648

References

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