USN-3850-2: NSS vulnerabilities
nss vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Summary
Several security issues were fixed in NSS.
Software Description
- nss – Network Security Service library
Details
USN-3850-1 fixed several vulnerabilities in NSS. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation.
A local attacker could possibly use this issue to perform a cache-timing
attack and recover private ECDSA keys. (CVE-2018-0495)
It was discovered that NSS incorrectly handled certain v2-compatible
ClientHello messages. A remote attacker could possibly use this issue to
perform a replay attack. (CVE-2018-12384)
It was discovered that NSS incorrectly handled certain padding oracles. A
remote attacker could possibly use this issue to perform a variant of the
Bleichenbacher attack. (CVE-2018-12404)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 12.04 ESM
- libnss3 – 2:3.28.4-0ubuntu0.12.04.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart any applications that
use NSS, such as Evolution, to make all the necessary changes.
References
Source: USN-3850-2: NSS vulnerabilities
