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Red Hat Enterprise Linux 7 RHSA-2020-4076-01 Moderate: NSS and NSPR Issue

red hat
Calendar Grey September 29, 2020
Dist Redhat Esm H88
The NSS and NSPR update for RHEL 7 resolves moderate vulnerabilities and defects. It is crucial to secure systems without delay.
An update for nss, nss-softokn, nss-util, and nspr 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 or NSPR (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.
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), nss-softokn (3.53.1), nss-util (3.53.1), nspr (4.25.0). (BZ#1804262, BZ#1804264, BZ#1804271, BZ#1804273)
Security Fix(es):
* nss: Out-of-bounds read when importing curve25519 private key (CVE-2019-11719)
* nss: Use-after-free in sftk_FreeSession due to improper refcounting (CVE-2019-11756)
* nss: Check length of inputs for cryptographic primitives (CVE-2019-17006)
* nss: Side channel attack on ECDSA signature generation (CVE-2020-6829)
* nss: P-384 and P-521 implementation uses a side-channel vulnerable modular inversion function (CVE-2020-12400)
* nss: ECDSA timing attack mitigation bypass (CVE-2020-12401)
* nss: Side channel vulnerabilities during RSA key generation (CVE-2020-12402)
* nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read (CVE-2020-12403)
* nss: PKCS#1 v1.5 signatures can be used for TLS 1.3 (CVE-2019-11727)
* 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):
* Memory leak: libcurl leaks 120 bytes on each connection (BZ#1688958)
* NSS does not set downgrade sentinel in ServerHello.random for TLS 1.0 and TLS 1.1 (BZ#1712924)
* Make TLS 1.3 work in FIPS mode (BZ#1724251)
* Name Constraints validation: CN treated as DNS name even when syntactically invalid as DNS name (BZ#1737910)
* x25519 allowed in FIPS mode (BZ#1754518)
* When NSS_SDB_USE_CACHE not set, after curl access https, dentry increase but never released - consider alternative algorithm for benchmarking ACCESS call in sdb_measureAccess (BZ#1779325)
* Running ipa-backup continuously causes httpd to crash and makes it irrecoverable (BZ#1804015)
* nss needs to comply to the new SP800-56A rev 3 requirements (BZ#1857308)
* KDF-self-tests-induced changes for nss in RHEL 7.9 (BZ#1870885)

Topics%20covered

Topics Covered

security advisory moderate security issue red hat bug fix nspr nss

References

https://access.redhat.com/security/cve/CVE-2019-11719 https://access.redhat.com/security/cve/CVE-2019-11727 https://access.redhat.com/security/cve/CVE-2019-11756 https://access.redhat.com/security/cve/CVE-2019-17006 https://access.redhat.com/security/cve/CVE-2019-17023 https://access.redhat.com/security/cve/CVE-2020-6829 https://access.redhat.com/security/cve/CVE-2020-12400 https://access.redhat.com/security/cve/CVE-2020-12401 https://access.redhat.com/security/cve/CVE-2020-12402 https://access.redhat.com/security/cve/CVE-2020-12403 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: nspr-4.25.0-2.el7_9.src.rpm nss-3.53.1-3.el7_9.src.rpm nss-softokn-3.53.1-6.el7_9.src.rpm nss-util-3.53.1-1.el7_9.src.rpm
x86_64: nspr-4.25.0-2.el7_9.i686.rpm nspr-4.25.0-2.el7_9.x86_64.rpm nspr-debuginfo-4.25.0-2.el7_9.i686.rpm nspr-debuginfo-4.25.0-2.el7_9.x86_64.rpm nss-3.53.1-3.el7_9.i686.rpm nss-3.53.1-3.el7_9.x86_64.rpm nss-debuginfo-3.53.1-3.el7_9.i686.rpm nss-debuginfo-3.53.1-3.el7_9.x86_64.rpm nss-softokn-3.53.1-6.el7_9.i686.rpm nss-softokn-3.53.1-6.el7_9.x86_64.rpm nss-softokn-debuginfo-3.53.1-6.el7_9.i686.rpm nss-softokn-debuginfo-3.53.1-6.el7_9.x86_64.rpm nss-softokn-freebl-3.53.1-6.el7_9.i686.rpm nss-softokn-freebl-3.53.1-6.el7_9.x86_64.rpm nss-sysinit-3.53.1-3.el7_9.x86_64.rpm nss-tools-3.53.1-3.el7_9.x86_64.rpm nss-util-3.53.1-1.el7_9.i686.rpm nss-util-3.53.1-1.el7_9.x86_64.rpm nss-util-debuginfo-3.53.1-1.el7_9.i686.rpm nss-util-debuginfo-3.53.1-1.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64: nspr-debuginfo-4.25.0-2.el7_9.i686.rpm nspr-debuginfo-4.25.0-2.el7_9.x86_64.rpm nspr-devel-4.25.0-2.el7_9.i686.rpm nspr-devel-4.25.0-2.el7_9.x86_64.rpm nss-debuginfo-3.53.1-3.el7_9.i686.rpm nss-debuginfo-3.53.1-3.el7_9.x86_64.rpm nss-devel-3.53.1-3.el7_9.i686.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4076-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4076
Issue date: 2020-09-29

Topic

An update for nss, nss-softokn, nss-util, and nspr is now available for RedHat 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 moderate security issue red hat bug fix nspr nss

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

1688958 - Memory leak: libcurl leaks 120 bytes on each connection [rhel-7.9.z]

1724251 - Make TLS 1.3 work in FIPS mode [rhel-7.9.z]

1728436 - CVE-2019-11719 nss: Out-of-bounds read when importing curve25519 private key

1730988 - CVE-2019-11727 nss: PKCS#1 v1.5 signatures can be used for TLS 1.3

1737910 - Name Constraints validation: CN treated as DNS name even when syntactically invalid as DNS name [rhel-7.9.z]

1774835 - CVE-2019-11756 nss: Use-after-free in sftk_FreeSession due to improper refcounting

1775916 - CVE-2019-17006 nss: Check length of inputs for cryptographic primitives

1779325 - when NSS_SDB_USE_CACHE not set, after curl access https, dentry increase but never released - consider alternative algorithm for benchmarking ACCESS call in sdb_measureAccess

1791225 - CVE-2019-17023 nss: TLS 1.3 HelloRetryRequest downgrade request sets client into invalid state

1804015 - Running ipa-backup continuously causes httpd to crash and makes it irrecoverable

1826187 - CVE-2020-6829 nss: Side channel attack on ECDSA signature generation

1826231 - CVE-2020-12402 nss: Side channel vulnerabilities during RSA key generation

1851294 - CVE-2020-12401 nss: ECDSA timing attack mitigation bypass

1853983 - CVE-2020-12400 nss: P-384 and P-521 implementation uses a side-channel vulnerable modular inversion function

1868931 - CVE-2020-12403 nss: CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read

Read the Full Advisory

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