CVE Vulnerabilities

CVE-2018-18066

NULL Pointer Dereference

Published: Oct 08, 2018 | Modified: Oct 16, 2019
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu

snmp_oid_compare in snmplib/snmp_api.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an unauthenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Net-snmp Net-snmp * *
Red Hat Enterprise Linux 7 RedHat net-snmp-1:5.7.2-47.el7 *
Red Hat Enterprise Linux 7.7 Extended Update Support RedHat net-snmp-1:5.7.2-43.el7_7.6 *
Net-snmp Ubuntu upstream *

Potential Mitigations

References