CVE-2018-12438

The Elliptic Curve Cryptography library (aka sunec or libsunec) allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Date published : 2018-06-14

https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/