CVE-2018-12434: Infoleak
First published: Fri Jun 15 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| LibreSSL | <2.6.5 | |
| LibreSSL | =2.7.0 | |
| LibreSSL | =2.7.1 | |
| LibreSSL | =2.7.2 | |
| LibreSSL | =2.7.3 |
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Reference Links
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.
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