CVE-2019-18222
4.7
MEDIUM
CVSS 3.1
EPSS 0.11%
Description
The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.
How to fix CVE-2019-18222
To remediate CVE-2019-18222, upgrade the affected package to a fixed version below.
- Alpine/mbedtls—upgrade to 2.16.4-r0 or later
- —upgrade to 2.16.4-1 or later
Is CVE-2019-18222 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.16.4-r0
- from 0, < 2.16.4-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |