Vulnerability identifier: #VU62347

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-20717

CWE-ID: CWE-789

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
1100 Series Integrated Services Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 100 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 1000 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 2000 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 5000 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient memory management when an affected device receives large amounts of traffic. A local user 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

1100 Series Integrated Services Routers: 20.6 - 20.7

Cisco SD-WAN vEdge 100 Series Routers: 20.6 - 20.7

Cisco SD-WAN vEdge 1000 Series Routers: 20.6 - 20.7

Cisco SD-WAN vEdge 2000 Series Routers: 20.6 - 20.7

Cisco SD-WAN vEdge 5000 Series Routers: 20.6 - 20.7

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-vedge-dos-jerVm4bB

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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