RHSA-2021:4909: Critical: nss security update

Published Dec 2, 2021
·
Updated

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.

Affected Software

68 affected componentsFixes available
redhat/nss<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-debugsource<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-debugsource<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-sysinit<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-sysinit-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-sysinit-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-tools<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-tools-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-tools-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-sysinit<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-tools<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-debugsource<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-softokn-freebl-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-sysinit<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-sysinit-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-tools<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-tools-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util-debuginfo<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss-util-devel<3.67.0-7.el8_4
3.67.0-7.el8_4
redhat/nss<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-debuginfo<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-debugsource<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-devel<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-softokn<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-softokn-debuginfo<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-softokn-devel<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-softokn-freebl<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-softokn-freebl-debuginfo<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-softokn-freebl-devel<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-sysinit<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-sysinit-debuginfo<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-tools<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-tools-debuginfo<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-util<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-util-debuginfo<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa
redhat/nss-util-devel<3.67.0-7.el8_4.aa
3.67.0-7.el8_4.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/nss to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  2. Upgrade

    Upgrade redhat/nss-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  3. Upgrade

    Upgrade redhat/nss-debugsource to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  4. Upgrade

    Upgrade redhat/nss-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  5. Upgrade

    Upgrade redhat/nss-softokn to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  6. Upgrade

    Upgrade redhat/nss-softokn-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  7. Upgrade

    Upgrade redhat/nss-softokn-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  8. Upgrade

    Upgrade redhat/nss-softokn-freebl to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  9. Upgrade

    Upgrade redhat/nss-softokn-freebl-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  10. Upgrade

    Upgrade redhat/nss-softokn-freebl-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  11. Upgrade

    Upgrade redhat/nss-sysinit to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  12. Upgrade

    Upgrade redhat/nss-sysinit-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  13. Upgrade

    Upgrade redhat/nss-tools to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  14. Upgrade

    Upgrade redhat/nss-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  15. Upgrade

    Upgrade redhat/nss-util to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  16. Upgrade

    Upgrade redhat/nss-util-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  17. Upgrade

    Upgrade redhat/nss-util-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4
  18. Upgrade

    Upgrade redhat/nss to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  19. Upgrade

    Upgrade redhat/nss-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  20. Upgrade

    Upgrade redhat/nss-debugsource to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  21. Upgrade

    Upgrade redhat/nss-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  22. Upgrade

    Upgrade redhat/nss-softokn to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  23. Upgrade

    Upgrade redhat/nss-softokn-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  24. Upgrade

    Upgrade redhat/nss-softokn-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  25. Upgrade

    Upgrade redhat/nss-softokn-freebl to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  26. Upgrade

    Upgrade redhat/nss-softokn-freebl-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  27. Upgrade

    Upgrade redhat/nss-softokn-freebl-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  28. Upgrade

    Upgrade redhat/nss-sysinit to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  29. Upgrade

    Upgrade redhat/nss-sysinit-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  30. Upgrade

    Upgrade redhat/nss-tools to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  31. Upgrade

    Upgrade redhat/nss-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  32. Upgrade

    Upgrade redhat/nss-util to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  33. Upgrade

    Upgrade redhat/nss-util-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa
  34. Upgrade

    Upgrade redhat/nss-util-devel to a version that resolves this vulnerability.

    Fixed in 3.67.0-7.el8_4.aa

Event History

Jun 15, 2026
Advisory Published
via Red Hat·08:42 PM
Data Sourced
via Red Hat·08:42 PM
RemedyDescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of RHSA-2021:4909?

The severity of RHSA-2021:4909 is classified as critical due to the memory corruption vulnerability in Network Security Services.

2

How do I fix RHSA-2021:4909?

To fix RHSA-2021:4909, update to the packages nss and related components to version 3.67.0-7.el8_4 or later.

3

What is the impact of RHSA-2021:4909?

The impact of RHSA-2021:4909 includes potential memory corruption that could allow an attacker to execute arbitrary code.

4

Which software versions are affected by RHSA-2021:4909?

Software versions affected by RHSA-2021:4909 include nss prior to version 3.67.0-7.el8_4.

5

Is there a workaround for RHSA-2021:4909?

There are no known workarounds for RHSA-2021:4909; upgrading to the patched version is recommended.

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RHSA-2021:4909 - Critical: nss security update - SecAlerts