Executive Summary

Title Cisco IOS Software Simple Network Management Protocol GET MIB Object ID Denial of Service Vulnerability
Name cisco-sa-20180328-snmp First vendor Publication 2018-03-28
Vendor Cisco Last vendor Modification 2018-03-28
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:S/C:N/I:N/A:C)
Cvss Base Score 6.3 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores


A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software running on certain models of Cisco Catalyst Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to a condition that could occur when the affected software processes an SNMP read request that contains a request for the ciscoFlashMIB object ID (OID). An attacker could trigger this vulnerability by issuing an SNMP GET request for the ciscoFlashMIB OID on an affected device. A successful exploit could cause the affected device to restart due to a SYS-3-CPUHOG.

Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-snmp ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-snmp"] This advisory is part of the March 28, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 20 Cisco Security Advisories that describe 22 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-66682"].


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Original Source

Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...)

CPE : Common Platform Enumeration

Os 1

Snort® IPS/IDS

Date Description
2020-12-05 Cisco IOS SNMP ciscoFlashFileEntry OID denial of service attempt
RuleID : 46101 - Revision : 2 - Type : PROTOCOL-SNMP

Alert History

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Date Informations
2020-12-05 21:23:46
  • Multiple Updates
2018-04-24 00:21:09
  • Multiple Updates
2018-03-29 05:20:10
  • Multiple Updates
2018-03-28 21:18:51
  • First insertion