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CVE-2022-20745

HIGHCVSS 7.5/10EPSS 1.35%

Last modified

CVE-2022-20745 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
1.35%

68.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoFirepower Threat Defense< 6.4.0.15
CiscoFirepower Threat Defense>= 6.5.0, < 6.6.5.2
CiscoFirepower Threat Defense>= 7.0.0, < 7.0.2
CiscoFirepower Threat Defense7.1.0
CiscoAdaptive Security Appliance Software< 9.12.4.38
CiscoAdaptive Security Appliance Software>= 9.13.0, < 9.14.4
CiscoAdaptive Security Appliance Software>= 9.15.0, < 9.15.1.21
CiscoAdaptive Security Appliance Software>= 9.16.0, < 9.16.2.14
CiscoAdaptive Security Appliance Software>= 9.17.0, < 9.17.1.7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-20745?
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.
How severe is CVE-2022-20745?
CVE-2022-20745 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.
How do I fix CVE-2022-20745?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-20745?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST