Ubuntu 22.10 USN-5892-1 Moderate: NSS Denial Of Service Issues

ubuntu

February 27, 2023

Several security issues were fixed in NSS.

Summary

Several security issues were fixed in NSS.

Software Description:

- 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)

Topics Covered

security advisory denial of service software fix ubuntu nss

Update Instructions

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

Ubuntu 22.10:
   libnss3                         2:3.82-1ubuntu0.1

Ubuntu 22.04 LTS:
   libnss3                         2:3.68.2-0ubuntu1.2

Ubuntu 20.04 LTS:
   libnss3                         2:3.49.1-1ubuntu1.9

Ubuntu 18.04 LTS:
   libnss3                         2:3.35-2ubuntu2.16

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