CVE-2022-20757
First published: Tue May 03 2022(Updated: )
A vulnerability in the connection handling function in Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper traffic handling when platform limits are reached. An attacker could exploit this vulnerability by sending a high rate of UDP traffic through an affected device. A successful exploit could allow the attacker to cause all new, incoming connections to be dropped, resulting in a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Threat Defense | <6.4.0.15 | |
| Cisco Firepower Threat Defense | >=6.5.0<6.6.5.2 | |
| Cisco Firepower Threat Defense | >=6.7.0<7.0.2 | |
| Cisco Firepower Threat Defense | =7.1.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-20757?
CVE-2022-20757 is a vulnerability in the connection handling function in Cisco Firepower Threat Defense (FTD) Software that allows an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
How does CVE-2022-20757 affect Cisco Firepower Threat Defense Software?
CVE-2022-20757 affects Cisco Firepower Threat Defense (FTD) Software versions up to 6.4.0.15, versions between 6.5.0 and 6.6.5.2, and versions between 6.7.0 and 7.0.2, including version 7.1.0.
What is the severity of CVE-2022-20757?
CVE-2022-20757 has a severity rating of high with a CVSS score of 7.5.
How can an attacker exploit CVE-2022-20757?
An unauthenticated, remote attacker can exploit CVE-2022-20757 by sending specially crafted traffic to the vulnerable device, causing a denial of service (DoS) condition.
Is there a fix for CVE-2022-20757?
Yes, Cisco has released software updates to address the vulnerability. It is recommended to update to the latest available version of Cisco Firepower Threat Defense (FTD) Software.
- collector/nvd-index
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/event
- agent/tags
- agent/type
- agent/description
- agent/last-modified-date
- agent/softwarecombine
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- vendor/cisco
- canonical/cisco firepower threat defense
- version/cisco firepower threat defense/6.5.0
- version/cisco firepower threat defense/6.7.0
- version/cisco firepower threat defense/7.1.0