CVE-2019-20892

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

net-snmp versiones anteriores a 5.8.1.pre1 presenta una doble liberación en la función usm_free_usmStateReference en el archivo snmplib/snmpusm.c por medio de una petición SNMPv3 GetBulk. NOTA: esto afecta a los paquetes net-snmp enviados a los usuarios finales por múltiples distribuciones de Linux, pero podría no afectar una versión anterior

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-06-25 CVE Reserved
2020-06-25 CVE Published
2024-05-16 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-415: Double Free

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2020/06/25/4	2024-08-05
https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027	2024-08-05
https://bugzilla.redhat.com/show_bug.cgi?id=1663027	2024-08-05
https://sourceforge.net/p/net-snmp/bugs/2923	2024-08-05

URL	Date	SRC
https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9	2022-09-02
https://www.oracle.com/security-alerts/cpujan2021.html	2022-09-02

URL	Date	SRC
https://security.gentoo.org/glsa/202008-12	2022-09-02
https://usn.ubuntu.com/4410-1	2022-09-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Net-snmp Search vendor "Net-snmp"		Net-snmp Search vendor "Net-snmp" for product "Net-snmp"				<= 5.8 Search vendor "Net-snmp" for product "Net-snmp" and version " <= 5.8"		-		Affected
Oracle Search vendor "Oracle"		Zfs Storage Appliance Kit Search vendor "Oracle" for product "Zfs Storage Appliance Kit"				8.8 Search vendor "Oracle" for product "Zfs Storage Appliance Kit" and version "8.8"		-		Affected