Is CVE-2019-20399 in the CISA KEV catalog?

No. CVE-2019-20399 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20399?

CVE-2019-20399 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2019-20399?

CVE-2019-20399 has an EPSS score of 0.88% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20399?

Upgrade libsecp256k1 to 0.3.1 or later.

CVE & CISA-KEV Catalog

CVE-2019-20399

MEDIUM

5.9

CVSS v3

NVD

Description

A timing vulnerability in the Scalar::check_overflow function in Parity libsecp256k1-rs before 0.3.1 potentially allows an attacker to leak information via a side-channel attack.

CWE-203

How to fix

Remediation Available

libsecp256k1NVD

Affected:< 0.3.1Fixed in:0.3.1CVE-2019-20399derived from NVD

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

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.88%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Patch1

github.com

Related Vulnerabilities

Other CWE-203 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-5753	Medium	5.6	94%	-	Fix
CVE-2003-0190	Medium	5.0	77%	-	Fix
CVE-2017-5715	Medium	5.6	74%	-	Fix
CVE-2018-3639	Medium	5.5	61%	-	Fix
CVE-2023-28770	High	7.5	58%	-	Fix
CVE-2004-1602	Medium	5.0	31%	-	-

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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.