Ubuntu Security Notice USN-5892-1
February 27, 2023
nss vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 22.10
– Ubuntu 22.04 LTS
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
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)
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.
References:
https://ubuntu.com/security/notices/USN-5892-1
CVE-2022-3479, CVE-2023-0767
Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.82-1ubuntu0.1
https://launchpad.net/ubuntu/+source/nss/2:3.68.2-0ubuntu1.2
https://launchpad.net/ubuntu/+source/nss/2:3.49.1-1ubuntu1.9
https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.16
