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.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
User Interaction None
No CVSS v3.0
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
The EPSS score is 0.00544.
Exploitation none
Automatable yes
Technical Impact partial
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Cisco |
|
Configuration 1 [-]
|
No data.
No data.
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2021-6844 | 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. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 09 Nov 2024 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: cisco
Published:
Updated: 2024-11-08T23:32:34.916Z
Reserved: 2020-11-13T00:00:00
Link: CVE-2021-1377
Updated: 2024-08-03T16:11:17.344Z
Status : Modified
Published: 2021-03-24T20:15:13.150
Modified: 2024-11-21T05:44:12.877
Link: CVE-2021-1377
No data.
OpenCVE Enrichment
No data.
EUVD