CVE-2018-12434

LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Score

CVSS 3.0 4.7 Medium

Status

Modified - cve@mitre.org

Published

2018-06-15

Last modified

2024-09-16

Weaknesses

CWE-200

Affected products

• Libressl (Openbsd)

References

• https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.6.5-relnotes.txt
• https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.7.4-relnotes.txt
• https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/