CVE-2018-18066

net-snmp: NULL pointer exception in snmp_oid_compare in snmplib/snmp_api.c resulting in a denial of service

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

snmp_oid_compare en snmplib/snmp_api.c en Net-SNMP en versiones anteriores a la 5.8 tiene un error de excepción de puntero NULL que puede ser empleado por un atacante no autenticado para provocar el cierre inesperado de la instancia de forma remota mediante un paquete UDP manipulado, lo que resulta en una denegación de servicio (DoS).

The net-snmp packages provide various libraries and tools for the Simple Network Management Protocol, including an SNMP library, an extensible agent, tools for requesting or setting information from SNMP agents, tools for generating and handling SNMP traps, a version of the netstat command which uses SNMP, and a Tk/Perl Management Information Base browser. Issues addressed include denial of service, double free, memory leak, and null pointer vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-10-08 CVE Reserved
2018-10-08 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (7)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20181107-0001	Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	X_refsource_misc

URL	Date	SRC
https://dumpco.re/blog/net-snmp-5.7.3-remote-dos	2024-08-05

URL	Date	SRC
https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d	2019-10-16
https://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791	2019-10-16

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2018-18066	2020-06-12
https://bugzilla.redhat.com/show_bug.cgi?id=1637572	2020-06-12

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
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Hyper Converged Infrastructure Search vendor "Netapp" for product "Hyper Converged Infrastructure"				-		-		Affected
Netapp Search vendor "Netapp"		Storagegrid Webscale Search vendor "Netapp" for product "Storagegrid Webscale"				-		-		Affected
Netapp Search vendor "Netapp"		Data Ontap Search vendor "Netapp" for product "Data Ontap"				-		-		Affected
Netapp Search vendor "Netapp"		E-series Santricity Os Controller Search vendor "Netapp" for product "E-series Santricity Os Controller"				>= 11.0 <= 11.5 Search vendor "Netapp" for product "E-series Santricity Os Controller" and version " >= 11.0 <= 11.5"		-		Affected
Netapp Search vendor "Netapp"		Solidfire Element Os Search vendor "Netapp" for product "Solidfire Element Os"				-		-		Affected