CVE-2018-12440: Google Boringssl

Medium severity, CVSS 4.7. EPSS: 0.1% chance of exploitation in the next 30 days.

BoringSSL through 2018-06-14 allows a memory-cache side-channel attack on DSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a DSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Affected products

• Google Boringssl: up to and including 2018-06-14

Published 2018-06-15. Last modified 2026-06-17.