CVE-2019-14318
MEDIUMEPSS 84th pctlDescription
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
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 84% of all known CVEs.
References
Related Vulnerabilities
Other CWE-417 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-9855 | Critical | 9.8 | 2.6% | - | Fix |
| CVE-2017-7480 | Critical | 9.8 | 2.3% | - | Fix |
| CVE-2017-6520 | Critical | 9.1 | 1.9% | - | - |
| CVE-2016-9879 | High | 7.5 | 1.4% | - | - |
| CVE-2018-5254 | High | 7.5 | 1.2% | - | Fix |
| CVE-2017-1000197 | Critical | 9.8 | 1.1% | - | - |
Common questions
How do I fix CVE-2019-14318?
Upgrade libcrypto++ on debian 11 to 5.6.4-9 or later.
Is CVE-2019-14318 being actively exploited?
Not that we know of. CVE-2019-14318 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 84% of all scored CVEs.
How severe is CVE-2019-14318?
CVE-2019-14318 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2019-14318 affect?
Published advisories record a fix for libcrypto++ (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.