What is CVE-2018-12434?

CVE-2018-12434 is a medium-severity vulnerability in Openbsd Libressl, classified under Information Disclosure. CVSS score: 4.7/10. Published 2018-06-15.

How severe is CVE-2018-12434?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Information disclosure in Openbsd Libressl

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 mach…

Vulnerability class: Information Disclosure

EPSS: 0.003 (23.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Openbsd Libressl — versions 2.7.0, 2.7.1, 2.7.2
N/a — versions n/a

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2018-12434?: CVE-2018-12434 is a medium-severity vulnerability in Openbsd Libressl, classified under Information Disclosure. CVSS score: 4.7/10. Published 2018-06-15.
How severe is CVE-2018-12434?: Medium severity. CVSS v3 base score is 4.7 out of 10.