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Red Hat RHEL 7 RHSA-2021-1384 Moderate NSS Remote DoS Advisory

red hat
Calendar Grey April 27, 2021
Dist Redhat Esm H88
Red Hat has issued a significant security patch for nss, tackling a remote denial-of-service vulnerability along with associated bug corrections for RHEL 7.
An update for nss is now available for Red Hat Enterprise Linux 7

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.

Summary

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)

Topics%20covered

Topics Covered

security advisory Red Hat remote DoS bug fix moderate severity NSS RHEL 7 Remote DoS

References

https://access.redhat.com/security/cve/CVE-2020-25648 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: nss-3.53.1-7.el7_9.src.rpm
x86_64: nss-3.53.1-7.el7_9.i686.rpm nss-3.53.1-7.el7_9.x86_64.rpm nss-debuginfo-3.53.1-7.el7_9.i686.rpm nss-debuginfo-3.53.1-7.el7_9.x86_64.rpm nss-sysinit-3.53.1-7.el7_9.x86_64.rpm nss-tools-3.53.1-7.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: nss-debuginfo-3.53.1-7.el7_9.i686.rpm nss-debuginfo-3.53.1-7.el7_9.x86_64.rpm nss-devel-3.53.1-7.el7_9.i686.rpm nss-devel-3.53.1-7.el7_9.x86_64.rpm nss-pkcs11-devel-3.53.1-7.el7_9.i686.rpm nss-pkcs11-devel-3.53.1-7.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: nss-3.53.1-7.el7_9.src.rpm
x86_64: nss-3.53.1-7.el7_9.i686.rpm nss-3.53.1-7.el7_9.x86_64.rpm nss-debuginfo-3.53.1-7.el7_9.i686.rpm nss-debuginfo-3.53.1-7.el7_9.x86_64.rpm nss-sysinit-3.53.1-7.el7_9.x86_64.rpm nss-tools-3.53.1-7.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64: nss-debuginfo-3.53.1-7.el7_9.i686.rpm nss-debuginfo-3.53.1-7.el7_9.x86_64.rpm nss-devel-3.53.1-7.el7_9.i686.rpm nss-devel-3.53.1-7.el7_9.x86_64.rpm nss-pkcs11-devel-3.53.1-7.el7_9.i686.rpm nss-pkcs11-devel-3.53.1-7.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: nss-3.53.1-7.el7_9.src.rpm
ppc64: nss-3.53.1-7.el7_9.ppc.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:1384-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1384
Issue date: 2021-04-27

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat remote DoS bug fix moderate severity NSS RHEL 7 Remote DoS

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

Bugs Fixed

1883973 - FTBFS: Paypal Cert expired [rhel-7.9.z]

1884793 - FTBFS: IKE CLASS_1563 fails gtest [rhel-7.9.z]

1885321 - Cannot compile code with nss headers and -Werror=strict-prototypes

1887319 - CVE-2020-25648 nss: TLS 1.3 CCS flood remote DoS Attack

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