CVE-2018-18065

Publication date 8 October 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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

Status

Show unmaintained releases

Package	Ubuntu Release	Status
net-snmp	18.10 cosmic	Fixed 5.7.3+dfsg-1.8ubuntu3.18.10.1
	18.04 LTS bionic	Fixed 5.7.3+dfsg-1.8ubuntu3.1
	16.04 LTS xenial	Fixed 5.7.3+dfsg-1ubuntu4.2
	14.04 LTS trusty	Fixed 5.7.2~dfsg-8.1ubuntu3.3

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
net-snmp	Upstream: https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3792-3
Net-SNMP vulnerability
22 October 2018

USN-3792-1
Net-SNMP vulnerability
15 October 2018

USN-3792-2
Net-SNMP vulnerability
16 October 2018