CVE-2021-1377
Description
A vulnerability in Address Resolution Protocol (ARP) management of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent an affected device from resolving ARP entries for legitimate hosts on the connected subnets. This vulnerability exists because ARP entries are mismanaged. An attacker could exploit this vulnerability by continuously sending traffic that results in incomplete ARP entries. A successful exploit could allow the attacker to cause ARP requests on the device to be unsuccessful for legitimate hosts, resulting in a denial of service (DoS) condition.
Risk Information
Base Score
5.8
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
EPSS Score
Exploitation Probability
0.544
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability For Cisco IOS | NCM |
| Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability For Cisco IOS XE Software | NCM |
| CVE-2021-1377 | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-1706090 | Security Update for Cisco IOS Amsterdam-17.2.1r |
| PATCH-1706107 | Security Update for Cisco IOS XE Software 5.2(1)SV5(1.3a) |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234