CVE-2019-14318
5.9
MEDIUM
CVSS 3.1
EPSS 3.2%
Description
Crypto++ 8.3.0 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because scalar multiplication in ecp.cpp (prime field curves, small leakage) and algebra.cpp (binary field curves, large leakage) is not constant time and leaks the bit length of the scalar among other information.
How to fix CVE-2019-14318
To remediate CVE-2019-14318, upgrade the affected package to a fixed version below.
- —upgrade to 5.6.4-9 or later
Is CVE-2019-14318 being exploited?
Low — EPSS is 3.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 5.6.4-9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |