CVE & CISA-KEV Catalog

CVE-2019-20892

MEDIUMEPSS 81th pctl

6.5

CVSS v3

Description

net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. NOTE: this affects net-snmp packages shipped to end users by multiple Linux distributions, but might not affect an upstream release.

How to fix

Remediation Available

net-snmpDebian

Fixed in:5.8+dfsg-3CVE-2019-20892

Fixed in:5.8+dfsg-3CVE-2019-20892

Fixed in:5.8+dfsg-3CVE-2019-20892

Fixed in:5.8+dfsg-3CVE-2019-20892

libsnmp-baseUbuntu

Fixed in:5.8+dfsg-2ubuntu2.1USN-4410-1

libsnmp-perlUbuntu

Fixed in:5.8+dfsg-2ubuntu2.1USN-4410-1

libsnmp35Ubuntu

Fixed in:5.8+dfsg-2ubuntu2.1USN-4410-1

net-snmpUbuntu

Fixed in:5.8+dfsg-2ubuntu2.1USN-4410-1

snmpdUbuntu

Fixed in:5.8+dfsg-2ubuntu2.1USN-4410-1

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.31%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch2

Exploit4

Third-Party Advisory2

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2003-0545	Critical	9.8	85%	-	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2026-33824	Critical	9.8	56%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	Fix

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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.