Is CVE-2019-20394 in the CISA KEV catalog?

No. CVE-2019-20394 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20394?

CVE-2019-20394 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2019-20394?

CVE-2019-20394 has an EPSS score of 2.79% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20394?

Upgrade libyang on debian 11 to 1.0.176-1 or later.

CVE & CISA-KEV Catalog

CVE-2019-20394

HIGHEPSS 85th pctl

8.8

CVSS v3

NVD

Description

A double-free is present in libyang before v1.0-r3 in the function yyparse() when a type statement in used in a notification statement. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.

CWE-415

How to fix

Remediation Available

libyangDebian

Fixed in:1.0.176-1CVE-2019-20394

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 ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.79%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch2

Exploit1

github.com

Third-Party Advisory1

github.com

Other references1

lists.debian.org

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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.