CVE-2021-1377 Detail
Current 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.
Analysis 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.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-399 | Resource Management Errors | Cisco Systems, Inc. |
Change History
2 change records found show changes
Initial Analysis 3/29/2021 4:13:28 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration | Record truncated, showing 500 of 15608 characters. View Entire Change Record OR
*cpe:2.3:o:cisco:ios:12.2(6)i1:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.1(3)svr1:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.1(3)svr2:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.1(3)svr3:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.1(3)svs:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.1(3)svs1:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.2(2)e6:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.2(2)e7:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios:15.2(2)e7b:*:*:*:*:*:*:*
*cpe:2.3:o:cis
|
|
| Added | CVSS V2 |
NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) |
|
| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |
|
| Changed | Reference Type |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-arp-mtfhBfjE No Types Assigned |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-arp-mtfhBfjE Vendor Advisory |
CVE Modified by Cisco Systems, Inc. 3/24/2021 5:15:12 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Changed | Description | Record truncated, showing 500 of 620 characters. View Entire Change Record 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 |
Record truncated, showing 500 of 615 characters. View Entire Change Record 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 AR |
Quick Info
CVE Dictionary Entry:
CVE-2021-1377
NVD Published Date:
03/24/2021
NVD Last Modified:
03/29/2021
Source:
Cisco Systems, Inc.