Is CVE-2019-20393 in the CISA KEV catalog?

No. CVE-2019-20393 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20393?

CVE-2019-20393 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2019-20393?

CVE-2019-20393 has an EPSS score of 2.79% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20393?

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

CVE & CISA-KEV Catalog

CVE-2019-20393

HIGHEPSS 85th pctl

8.8

CVSS v3

NVD

Description

A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. 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-2019-20393

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

Embed a live status badge for CVE-2019-20393

Markdown

[![CVE-2019-20393](https://tridentstack.com/cve/badge/CVE-2019-20393.svg)](https://tridentstack.com/cve/CVE-2019-20393)

HTML

<a href="https://tridentstack.com/cve/CVE-2019-20393"><img src="https://tridentstack.com/cve/badge/CVE-2019-20393.svg" alt="CVE-2019-20393"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.