CVE-2018-12437

LibTomCrypt through 1.18.1 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://security.gentoo.org/glsa/202007-53

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