CVE-2022-20745: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Interface Denial of Service Vulnerability
First published: Tue May 03 2022(Updated: )
A vulnerability in the web services interface for remote access VPN features of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a crafted HTTPS request to an affected device. A successful exploit could allow the attacker to cause the device to reload, 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 | >=7.0.0<7.0.2 | |
| Cisco Firepower Threat Defense | =7.1.0 | |
| Cisco Adaptive Security Appliance Software | <9.12.4.38 | |
| Cisco Adaptive Security Appliance Software | >=9.13.0<9.14.4 | |
| Cisco Adaptive Security Appliance Software | >=9.15.0<9.15.1.21 | |
| Cisco Adaptive Security Appliance Software | >=9.16.0<9.16.2.14 | |
| Cisco Adaptive Security Appliance Software | >=9.17.0<9.17.1.7 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-20745?
CVE-2022-20745 is a vulnerability in the web services interface for remote access VPN features of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
What is the severity of CVE-2022-20745?
The severity of CVE-2022-20745 is high with a CVSS score of 7.5.
Which software versions are affected by CVE-2022-20745?
Cisco Firepower Threat Defense versions 6.4.0.15, 6.5.0 - 6.6.5.2, 7.0.0 - 7.0.2, and 7.1.0, as well as Cisco Adaptive Security Appliance Software versions 9.12.4.38, 9.13.0 - 9.14.4, 9.15.0 - 9.15.1.21, 9.16.0 - 9.16.2.14, and 9.17.0 - 9.17.1.7 are affected by CVE-2022-20745.
How can an attacker exploit CVE-2022-20745?
An attacker can exploit CVE-2022-20745 by sending a specially crafted request to the web services interface for remote access VPN features, causing a DoS condition.
Is there a fix available for CVE-2022-20745?
Yes, Cisco has released software updates to address the vulnerability. Please refer to the Cisco security advisory for more information.
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- vendor/cisco
- canonical/cisco firepower threat defense
- version/cisco firepower threat defense/6.5.0
- version/cisco firepower threat defense/7.0.0
- version/cisco firepower threat defense/7.1.0
- canonical/cisco adaptive security appliance software
- version/cisco adaptive security appliance software/9.13.0
- version/cisco adaptive security appliance software/9.15.0
- version/cisco adaptive security appliance software/9.16.0
- version/cisco adaptive security appliance software/9.17.0