#VU51770 Resource management error in Cisco Systems, Inc products - CVE-2021-1377

Vulnerability identifier: #VU51770

Vulnerability risk: Medium

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

CVE-ID: CVE-2021-1377

CWE-ID: CWE-399

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Cisco IOS
Cisco IOS XE
Cisco 1100 Series Industrial Integrated Services Routers
Cisco Catalyst 9400 Series Switches
Cisco Catalyst 9500 Series Switches
Cisco Catalyst 9300 Series Switches
Cisco 1000 Series Integrated Services Routers
Cisco 4000 Series Integrated Services Routers
Cisco Catalyst 3650 Series Switches
Cisco Catalyst 3850 Series Switches
Cisco Cloud Services Router 1000V Series
Cisco ASR 1000 Series Aggregation Services Routers
Cisco 2600 Series Multiservice Platforms
Cisco Catalyst 9200 Series Switches
Cisco Catalyst 9600 Series Switches
Cisco Catalyst 9800 Series Wireless Controllers

Software vendor:
Cisco Systems, Inc

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

The vulnerability exists due to Address Resolution Protocol (ARP) entries are mismanaged. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-arp-mtfhBfjE