Cisco NX-OS SNMP input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Cisco NX-OS. The affected element is an unknown function of the component SNMP. Such manipulation leads to input validation. This vulnerability is traded as CVE-2018-0456. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco NX-OS (Router Operating System) (affected version unknown). Affected by this issue is an unknown functionality of the component SNMP. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application of an affected device to restart unexpectedly. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

The bug was discovered 10/17/2018. The weakness was shared 10/17/2018 with Cisco as cisco-sa-20181017-nxos-snmp as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is handled as CVE-2018-0456 since 11/26/2017. The attack may be launched remotely. The successful exploitation needs a simple authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 118462 (Cisco NX-OS SNMP DoS.), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316463 (Cisco NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability(cisco-sa-20181017-nxos-snmp)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 hours after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (118462) and SecurityFocus (BID 105668†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.7
NVD Vector: 🔍

CNA Base Score: 7.7
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118462
Nessus Name: Cisco NX-OS SNMP DoS.
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/26/2017 🔍
10/16/2018 +323 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/17/2018 +0 days 🔍
10/18/2018 +1 days 🔍
10/26/2018 +8 days 🔍
05/30/2023 +1677 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20181017-nxos-snmp
Organization: Cisco
Status: Confirmed

CVE: CVE-2018-0456 (🔍)
GCVE (CVE): GCVE-0-2018-0456
GCVE (VulDB): GCVE-100-125714
SecurityFocus: 105668 - Cisco NX-OS Software CVE-2018-0456 Remote Denial of Service Vulnerability
SecurityTracker: 1041921

Entryinfo

Created: 10/18/2018 06:44
Updated: 05/30/2023 09:05
Changes: 10/18/2018 06:44 (68), 04/05/2020 09:19 (6), 05/30/2023 09:03 (4), 05/30/2023 09:05 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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