CVE-2018-12436
4.7
MEDIUM
CVSS 3.1
EPSS 0.14%
Description
wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
How to fix CVE-2018-12436
To remediate CVE-2018-12436, upgrade the affected package to a fixed version below.
- Debian/wolfssl—upgrade to 3.15.3+dfsg-1 or later
Is CVE-2018-12436 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.15.3+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.7 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |