#VU62667 Input validation error


Published: 2022-04-27

Vulnerability identifier: #VU62667

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20745

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Adaptive Security Appliance (ASA)
Hardware solutions / Security hardware applicances
Cisco Firepower Threat Defense (FTD)
Hardware solutions / Security hardware applicances

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the web services interface for remote access VPN feature. A remote attacker can send specially crafted HTTP requests to the device and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco Adaptive Security Appliance (ASA): 9.12 - 9.16.2.3

Cisco Firepower Threat Defense (FTD): 7.0.0 - 7.0.1, 6.7.0 - 6.7.0.3, 6.6.0 - 6.6.5, 6.5.0 - 6.5.0.5, 6.4.0 - 6.4.0.12, 6.3.0 - 6.3.0.6, 6.2.3 - 6.2.3.17, 6.2.2 - 6.2.2.1


CPE

External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asafdt-webvpn-dos-tzPSYern
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz70595


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


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