Ubuntu Security Notice USN-5506-1

Ubuntu Security Notice USN-5506-1
July 07, 2022

nss vulnerabilities

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

– Ubuntu 22.04 LTS
– Ubuntu 21.10
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS


Several security issues were fixed in NSS.

Software Description:
– nss: Network Security Service library


Tavis Ormandy discovered that NSS incorrectly handled an empty pkcs7
sequence. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service. This issue only affected Ubuntu
18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10. (CVE-2022-22747)

Ronald Crane discovered that NSS incorrectly handled certain memory
operations. A remote attacker could use this issue to cause NSS to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions:

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

Ubuntu 22.04 LTS:
libnss3 2:3.68.2-0ubuntu1.1

Ubuntu 21.10:
libnss3 2:3.68-1ubuntu1.2

Ubuntu 20.04 LTS:
libnss3 2:3.49.1-1ubuntu1.8

Ubuntu 18.04 LTS:
libnss3 2:3.35-2ubuntu2.15

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

CVE-2022-22747, CVE-2022-34480

Package Information: