==========================================================================
Ubuntu Security Notice USN-3850-1
January 09, 2019
nss vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in NSS.
Software Description:
– nss: Network Security Service library
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 18.10:
libnss3 2:3.36.1-1ubuntu1.1
Ubuntu 18.04 LTS:
libnss3 2:3.35-2ubuntu2.1
Ubuntu 16.04 LTS:
libnss3 2:3.28.4-0ubuntu0.16.04.4
Ubuntu 14.04 LTS:
libnss3 2:3.28.4-0ubuntu0.14.04.4
After a standard system update you need to restart any applications that
use NSS, such as Evolution, to make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3850-1
CVE-2018-0495, CVE-2018-12384, CVE-2018-12404
Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.36.1-1ubuntu1.1
https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.1
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.4
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.4
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