CVE-2024-20339

Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vulnerability

Description

A vulnerability in the TLS processing feature of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an issue that occurs when TLS traffic is processed. An attacker could exploit this vulnerability by sending certain TLS traffic over IPv4 through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition and impacting traffic to and through the affected device.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.34%
Vendor Advisory cisco.com Vendor Advisory cisco.com
Affected: Cisco Cisco Firepower Threat Defense Software
Published at:
Updated at:

References

Link Tags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-dos-QXYE5Ufy vendor advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-M446vbEO broken link
https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-20339?
CVE-2024-20339 has been scored as a high severity vulnerability.
How to fix CVE-2024-20339?
To fix CVE-2024-20339, 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-2024-20339 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-20339 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-20339?
CVE-2024-20339 affects Cisco Cisco Firepower Threat Defense Software.
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