==========================================================================
Ubuntu Security Notice USN-6727-2
April 11, 2024

nss regression
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

USN-6727-1 introduced a regression in NSS.

Software Description:
- nss: Network Security Service library

Details:

USN-6727-1 fixed vulnerabilities in NSS. The update introduced a regression
when trying to load security modules on Ubuntu 20.04 LTS and Ubuntu 22.04
LTS. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

  It was discovered that NSS incorrectly handled padding when checking PKCS#1
  certificates. A remote attacker could possibly use this issue to perform
  Bleichenbacher-like attacks and recover private data. This issue only
  affected Ubuntu 20.04 LTS. (CVE-2023-4421)
   It was discovered that NSS had a timing side-channel when performing RSA
  decryption. A remote attacker could possibly use this issue to recover
  private data. (CVE-2023-5388)
   It was discovered that NSS had a timing side-channel when using certain
  NIST curves. A remote attacker could possibly use this issue to recover
  private data. (CVE-2023-6135)
   The NSS package contained outdated CA certificates. This update refreshes
  the NSS package to version 3.98 which includes the latest CA certificate
  bundle and other security improvements.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
   libnss3                         2:3.98-0ubuntu0.22.04.2

Ubuntu 20.04 LTS:
   libnss3                         2:3.98-0ubuntu0.20.04.2

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6727-2
   https://ubuntu.com/security/notices/USN-6727-1
   https://launchpad.net/bugs/2060906

Package Information:
   https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.22.04.2
   https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.20.04.2

Ubuntu 6727-2: NSS Security Advisory Updates

April 11, 2024
USN-6727-1 introduced a regression in NSS.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: USN-6727-1 introduced a regression in NSS. Software Description: - nss: Network Security Service library Details: USN-6727-1 fixed vulnerabilities in NSS. The update introduced a regression when trying to load security modules on Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that NSS incorrectly handled padding when checking PKCS#1 certificates. A remote attacker could possibly use this issue to perform Bleichenbacher-like attacks and recover private data. This issue only affected Ubuntu 20.04 LTS. (CVE-2023-4421) It was discovered that NSS had a timing side-channel when performing RSA decryption. A remote attacker could possibly use this issue to recover private data. (CVE-2023-5388) It was discovered that...

Read the Full Advisory

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: libnss3 2:3.98-0ubuntu0.22.04.2 Ubuntu 20.04 LTS: libnss3 2:3.98-0ubuntu0.20.04.2 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6727-2

https://ubuntu.com/security/notices/USN-6727-1

https://launchpad.net/bugs/2060906

Severity
Ubuntu Security Notice USN-6727-2

Package Information

https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.22.04.2 https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.20.04.2

Related News

The End of the Road for Linux 6.11: A Call to Upgrade to Kernel 6.12
3 - 5 min read
The Linux kernel community recently issued an EOL announcement regarding the 6.11 kernel series, urging sysadmins to upgrade quickly to 6.12 . This
A Linux Admin
3 - 6 min read
As 2025 approaches, we Linux admins are facing new and often unseen cloud-native security obstacles. While skilled at mitigating known risks,
Leveraging Insights from the Linux Foundation
3 - 5 min read
The Linux Foundation's recent Census III report provides critical insights for Linux administrators, information security professionals, and anyone
Chrome 131 Released: Emergency Security Update Fixes Over a Dozen Significant Vulns
3 - 6 min read
Google recently unveiled a critical security update to their popular web browser, Google Chrome, addressing over a dozen significant security
From Wayland Fixes to Security Boosts: Examining Qt 6.8.1
3 - 6 min read
The recent Qt 6.8.1 release brings significant updates and improvements, strengthening its reputation as a secure and reliable application
Exploring Arch Linux 2024.12.01: Security Implications & Notable Enhancements for Linux Admins
3 - 6 min read
The Arch Linux 2024.12.01 ISO release marks an impressive milestone, offering cutting-edge updates that enhance functionality, streamline
Deck the Halls with Enhanced Security: Linux Kernel 6.13
3 - 5 min read
As Linux admins and infosec professionals prepare for the holiday season, there's much cause for celebration this year! Linus Torvalds recently made
Lessons from Bootkitty: Securing Linux Systems Against UEFI Intrusions
3 - 5 min read
New Linux security threats mark critical junctures that challenge existing policies and test security protocols to their limit. One such milestone

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved