A Bleichenbacher type side-channel based padding oracle attack was found in
the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data.
An attacker who is able to run a process on the same physical core as the
victim process, could use this flaw extract plaintext or in some cases
downgrade any TLS connections to a vulnerable server.
Upstream:released (3.4.1~rc1-1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 LTS (Trusty Tahr):needed
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):needed
Ubuntu 18.10 (Cosmic Cuttlefish):needed
Ubuntu 19.04 (Disco Dingo):not-affected (3.4.1~rc1-1)
More Information

Updated: 2019-01-14 21:30:34 UTC (commit 51f9b73af244ba86b9321e46e526586c25a8e060)