CVE-2020-3557: Cisco Firepower Management Center Software Denial of Service Vulnerability

Published Oct 21, 2020
·
Updated

A vulnerability in the host input API daemon of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper certificate validation. An attacker could exploit this vulnerability by sending a crafted data stream to the host input daemon of the affected device. A successful exploit could allow the attacker to cause the host input daemon to restart. The attacker could use repeated attacks to cause the daemon to continuously reload, creating a DoS condition for the API.

Affected Software

2 affected components
Cisco Secure Firewall Management Center<6.6.1
Cisco FirePOWER Management Center<6.6.1

Event History

Oct 21, 2020
CVE Published
via MITRE·06:41 PM
Data Sourced
via MITRE·06:41 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is CVE-2020-3557?

CVE-2020-3557 is a vulnerability in the host input API daemon of Cisco Firepower Management Center (FMC) Software.

2

How does CVE-2020-3557 affect Cisco Firepower Management Center?

CVE-2020-3557 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

3

What causes CVE-2020-3557?

The vulnerability is due to improper certificate validation.

4

What is the severity of CVE-2020-3557?

CVE-2020-3557 has a severity rating of medium with a CVSS score of 5.3.

5

How can I fix CVE-2020-3557?

To fix CVE-2020-3557, users should upgrade to a version of Cisco Firepower Management Center (FMC) Software that is not affected.

Contact

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