1. Ubuntu Security Notices
  2. USN-5892-1

USN-5892-1: NSS vulnerabilities

Publication date

27 February 2023

Overview

Several security issues were fixed in NSS.

Releases

Packages

  • nss - Network Security Service library

Details

It was discovered that NSS incorrectly handled client authentication
without a user certificate in the database. A remote attacker could
possibly use this issue to cause a NSS client to crash, resulting in a
denial of service. This issue only affected Ubuntu 22.10. (CVE-2022-3479)

Christian Holler discovered that NSS incorrectly handled certain PKCS 12
certificated bundles. A remote attacker could use this issue to cause NSS
to crash, leading to a denial of service, or possibly execute arbitrary
code. (CVE-2023-0767)

It was discovered that NSS incorrectly handled client authentication
without a user certificate in the database. A remote attacker could
possibly use this issue to cause a NSS client to crash, resulting in a
denial of service. This issue only affected Ubuntu 22.10. (CVE-2022-3479)

Christian Holler discovered that NSS incorrectly handled certain PKCS 12
certificated bundles. A remote attacker could use this issue to cause NSS
to crash, leading to a denial of service, or possibly execute arbitrary
code. (CVE-2023-0767)

Update instructions

After a standard system update you need to restart any applications that use NSS to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.10 kinetic libnss3 –  2:3.82-1ubuntu0.1
22.04 jammy libnss3 –  2:3.68.2-0ubuntu1.2
20.04 focal libnss3 –  2:3.49.1-1ubuntu1.9
18.04 bionic libnss3 –  2:3.35-2ubuntu2.16

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References

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