nss vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
* Ubuntu 20.04 LTS
* Ubuntu 19.10
* Ubuntu 18.04 LTS
* Ubuntu 16.04 LTS
Summary
Several security issues were fixed in NSS.
Software Description
* nss - Network Security Service library
Details
It was discovered that NSS incorrectly handled the TLS State
Machine. A remote attacker could possibly use this issue to cause
NSS to hang, resulting in a denial of service. This issue only
affected Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-17023)
Cesar Pereida Garcia discovered that NSS incorrectly handled DSA
key generation. A local attacker could possibly use this issue to
perform a timing attack and recover DSA keys. (CVE-2020-12399)
Update instructions
The problem can be corrected by updating your system to the
following package versions:
Ubuntu 20.04 LTS
libnss3 - 2:3.49.1-1ubuntu1.1
Ubuntu 19.10
libnss3 - 2:3.45-1ubuntu2.3
Ubuntu 18.04 LTS
libnss3 - 2:3.35-2ubuntu2.8
Ubuntu 16.04 LTS
libnss3 - 2:3.28.4-0ubuntu0.16.04.11
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to
make all the necessary changes.
References
* CVE-2019-17023
* CVE-2020-12399
--- Mystic BBS v1.12 A45 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)