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RedHat 8: RHSA-2021-4903-05 Critical: NSS Memory Corruption

red hat
Calendar Grey December 1, 2021
Dist Redhat Esm H88
Significant security patch released for Red Hat Enterprise Linux rectifies memory allocation issues to bolster both safety and efficiency.
An update for nss is now available for Red Hat Enterprise Linux 8

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: Memory corruption in decodeECorDsaSignature with DSA signatures (and RSA-PSS) (CVE-2021-43527)
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.

Topics%20covered

Topics Covered

security advisory security update security issue Red Hat critical memory corruption NSS

References

https://access.redhat.com/security/cve/CVE-2021-43527 https://access.redhat.com/security/vulnerabilities/RHSB-2021-008 https://access.redhat.com/security/updates/classification/#critical

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: nss-3.67.0-7.el8_5.src.rpm
aarch64: nss-3.67.0-7.el8_5.aarch64.rpm nss-debuginfo-3.67.0-7.el8_5.aarch64.rpm nss-debugsource-3.67.0-7.el8_5.aarch64.rpm nss-devel-3.67.0-7.el8_5.aarch64.rpm nss-softokn-3.67.0-7.el8_5.aarch64.rpm nss-softokn-debuginfo-3.67.0-7.el8_5.aarch64.rpm nss-softokn-devel-3.67.0-7.el8_5.aarch64.rpm nss-softokn-freebl-3.67.0-7.el8_5.aarch64.rpm nss-softokn-freebl-debuginfo-3.67.0-7.el8_5.aarch64.rpm nss-softokn-freebl-devel-3.67.0-7.el8_5.aarch64.rpm nss-sysinit-3.67.0-7.el8_5.aarch64.rpm nss-sysinit-debuginfo-3.67.0-7.el8_5.aarch64.rpm nss-tools-3.67.0-7.el8_5.aarch64.rpm nss-tools-debuginfo-3.67.0-7.el8_5.aarch64.rpm nss-util-3.67.0-7.el8_5.aarch64.rpm nss-util-debuginfo-3.67.0-7.el8_5.aarch64.rpm nss-util-devel-3.67.0-7.el8_5.aarch64.rpm
ppc64le: nss-3.67.0-7.el8_5.ppc64le.rpm nss-debuginfo-3.67.0-7.el8_5.ppc64le.rpm nss-debugsource-3.67.0-7.el8_5.ppc64le.rpm nss-devel-3.67.0-7.el8_5.ppc64le.rpm nss-softokn-3.67.0-7.el8_5.ppc64le.rpm nss-softokn-debuginfo-3.67.0-7.el8_5.ppc64le.rpm nss-softokn-devel-3.67.0-7.el8_5.ppc64le.rpm nss-softokn-freebl-3.67.0-7.el8_5.ppc64le.rpm nss-softokn-freebl-debuginfo-3.67.0-7.el8_5.ppc64le.rpm nss-softokn-freebl-devel-3.67.0-7.el8_5.ppc64le.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4903-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4903
Issue date: 2021-12-01

Topic

An update for nss is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Critical. 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 security update security issue Red Hat critical memory corruption NSS

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2024370 - CVE-2021-43527 nss: Memory corruption in decodeECorDsaSignature with DSA signatures (and RSA-PSS)

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