USN-4417-1 fixed a vulnerability in NSS. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
Cesar Pereida, Billy Bob Brumley, Yuval Yarom, and Nicola Tuveri discovered that NSS incorrectly handled RSA key generation. A local attacker could possibly use this issue to perform a timing attack and recover RSA keys.
{
"binaries": [
{
"binary_version": "2:3.28.4-0ubuntu0.14.04.5+esm6",
"binary_name": "libnss3"
},
{
"binary_version": "2:3.28.4-0ubuntu0.14.04.5+esm6",
"binary_name": "libnss3-1d"
},
{
"binary_version": "2:3.28.4-0ubuntu0.14.04.5+esm6",
"binary_name": "libnss3-dev"
},
{
"binary_version": "2:3.28.4-0ubuntu0.14.04.5+esm6",
"binary_name": "libnss3-nssdb"
},
{
"binary_version": "2:3.28.4-0ubuntu0.14.04.5+esm6",
"binary_name": "libnss3-tools"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}