CVE-2018-12434: Infoleak
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.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2018-12434?
CVE-2018-12434 is a vulnerability in LibreSSL before 2.6.5 and 2.7.x before 2.7.4 that allows a memory-cache side-channel attack on DSA and ECDSA signatures.
What is the severity of CVE-2018-12434?
The severity of CVE-2018-12434 is medium with a CVSS score of 4.7.
How can an attacker exploit CVE-2018-12434?
To exploit CVE-2018-12434, an attacker needs access to either the local machine or a different virtual machine on the same physical host.
Which versions of LibreSSL are affected?
LibreSSL versions before 2.6.5 and 2.7.x before 2.7.4 are affected.
How can I fix CVE-2018-12434?
To fix CVE-2018-12434, it is recommended to upgrade to LibreSSL version 2.6.5 or 2.7.4.