CVE-2019-20892 Information

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.

CVSS Vector

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

Reference

http://www.openwall.com/lists/oss-security/2020/06/25/4 https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027 https://bugzilla.redhat.com/show_bug.cgi?id=1663027 https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9 https://security.gentoo.org/glsa/202008-12 https://sourceforge.net/p/net-snmp/bugs/2923/ https://usn.ubuntu.com/4410-1/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5