CVE-2020-3533

Cisco Firepower Threat Defense Software SNMP Denial of Service Vulnerability

Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to restart unexpectedly. The vulnerability is due to a lack of sufficient memory management protections under heavy SNMP polling loads. An attacker could exploit this vulnerability by sending a high rate of SNMP requests to the SNMP daemon through the management interface on an affected device. A successful exploit could allow the attacker to cause the SNMP daemon process to consume a large amount of system memory over time, which could then lead to an unexpected device restart, causing a denial of service (DoS) condition. This vulnerability affects all versions of SNMP.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.31% Top 25%
Vendor Advisory cisco.com
Affected: Cisco Cisco Firepower Threat Defense Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snmp-dos-R8ENPbOs vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-3533?
CVE-2020-3533 has been scored as a high severity vulnerability.
How to fix CVE-2020-3533?
To fix CVE-2020-3533, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-3533 being actively exploited in the wild?
It is possible that CVE-2020-3533 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-3533?
CVE-2020-3533 affects Cisco Cisco Firepower Threat Defense Software.
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