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Ubuntu 22.04 LTS USN-6727-2 Moderate: NSS Regression Alert

ubuntu
Calendar Grey April 11, 2024
Dist Ubuntu Esm H88
Ubuntu Security Update USN-6727-2 tackles an NSS flaw impacting versions 20.04 and 22.04. Upgrade immediately!
USN-6727-1 introduced a regression in NSS.

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

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory network security ubuntu regression fix nss

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

Ubuntu Security Notice USN-6727-2

Topics%20covered

Topics Covered

security advisory network security ubuntu regression fix nss

Package Information

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