CVE-2018-12437
4.9
MEDIUM
CVSS 3.1
EPSS 0.08%
Description
LibTomCrypt through 1.18.1 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-2018-12437
To remediate CVE-2018-12437, upgrade the affected package to a fixed version below.
- Debian/libtomcrypt—upgrade to 1.18.2-1 or later
Is CVE-2018-12437 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.18.2-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N |