#VU62338 Input validation error in Cisco Systems, Inc products - CVE-2022-20679

Vulnerability identifier: #VU62338

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-20679

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system
Cisco 1000 Series Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
4221 Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
4321 Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
4331 Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
4351 Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 8200 Series Edge Platforms
Hardware solutions / Routers & switches, VoIP, GSM, etc
Catalyst 8300 Series Edge Platforms
Hardware solutions / Routers & switches, VoIP, GSM, etc

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 IPSec decryption routine. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XE: All versions

Cisco 1000 Series Integrated Services Routers: All versions

4221 Integrated Services Routers: All versions

4321 Integrated Services Routers: All versions

4331 Integrated Services Routers: All versions

4351 Integrated Services Routers: All versions

Catalyst 8200 Series Edge Platforms: All versions

Catalyst 8300 Series Edge Platforms: All versions

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qfp-ipsec-GQmqvtqV

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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.