CVE-2019-20892

MEDIUM

Net-snmp < 5.8 - Double Free

Title source: rule

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.

References (8)

[Exploit, Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2020/06/25/4

[Exploit, Issue Tracking, Third Party Advisory] https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027

[Exploit, Issue Tracking, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=1663027

[Patch, Third Party Advisory] https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9

View Patch ZIP pw:eip

[Third Party Advisory] https://security.gentoo.org/glsa/202008-12

[Exploit, Third Party Advisory] https://sourceforge.net/p/net-snmp/bugs/2923/

[Third Party Advisory] https://usn.ubuntu.com/4410-1/

[Patch, Third Party Advisory] https://www.oracle.com/security-alerts/cpujan2021.html

Scores

CVSS v3 6.5

EPSS 0.0050

EPSS Percentile 65.7%

Attack Vector NETWORK

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

Classification

CWE

CWE-415

Status published

Affected Products (2)

net-snmp/net-snmp < 5.8

oracle/zfs_storage_appliance_kit

Timeline

Published Jun 25, 2020

Tracked Since Feb 18, 2026