CVE-2021-1377

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 24-03-2021 09:15

Last modified: - 25-04-2022 07:05

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Low

Attack complexity

Network

Attack vector

Low

Availability

None

Confidentiality

None

Integrity

None

Privileges required

Changed

Scope

None

User interaction

5.8

Base score

3.9

1.4

Exploitability score

Impact score

Verification logic

vendor=cisco AND product=ios AND version=12.2\(6\)i1

vendor=cisco AND product=ios AND version=15.1\(3\)svr1

vendor=cisco AND product=ios AND version=15.1\(3\)svr2

vendor=cisco AND product=ios AND version=15.1\(3\)svr3

vendor=cisco AND product=ios AND version=15.1\(3\)svs

vendor=cisco AND product=ios AND version=15.1\(3\)svs1

vendor=cisco AND product=ios AND version=15.2\(2\)e6

vendor=cisco AND product=ios AND version=15.2\(2\)e7

vendor=cisco AND product=ios AND version=15.2\(2\)e7b

vendor=cisco AND product=ios AND version=15.2\(2\)e8

vendor=cisco AND product=ios AND version=15.2\(2\)e9

vendor=cisco AND product=ios AND version=15.2\(2\)e9a

vendor=cisco AND product=ios AND version=15.2\(2\)e10

vendor=cisco AND product=ios AND version=15.2\(3\)e5

vendor=cisco AND product=ios AND version=15.2\(4\)e4

vendor=cisco AND product=ios AND version=15.2\(4\)e5

vendor=cisco AND product=ios AND version=15.2\(4\)e5a

vendor=cisco AND product=ios AND version=15.2\(4\)e6

vendor=cisco AND product=ios AND version=15.2\(4\)e7

vendor=cisco AND product=ios AND version=15.2\(4\)e8

vendor=cisco AND product=ios AND version=15.2\(4\)e9

vendor=cisco AND product=ios AND version=15.2\(4\)e10

vendor=cisco AND product=ios AND version=15.2\(4\)e10a

vendor=cisco AND product=ios AND version=15.2\(4\)ea6

vendor=cisco AND product=ios AND version=15.2\(4\)ea7

vendor=cisco AND product=ios AND version=15.2\(4\)ea8

vendor=cisco AND product=ios AND version=15.2\(4\)ea9

vendor=cisco AND product=ios AND version=15.2\(4\)ea9a

vendor=cisco AND product=ios AND version=15.2\(4\)ea10

vendor=cisco AND product=ios AND version=15.2\(5\)e1

vendor=cisco AND product=ios AND version=15.2\(5\)e2

vendor=cisco AND product=ios AND version=15.2\(5\)e2b

vendor=cisco AND product=ios AND version=15.2\(5\)e2c

vendor=cisco AND product=ios AND version=15.2\(5\)ex

vendor=cisco AND product=ios AND version=15.2\(5a\)e1

vendor=cisco AND product=ios AND version=15.2\(6\)e

vendor=cisco AND product=ios AND version=15.2\(6\)e0a

vendor=cisco AND product=ios AND version=15.2\(6\)e0c

vendor=cisco AND product=ios AND version=15.2\(6\)e1

vendor=cisco AND product=ios AND version=15.2\(6\)e1a

vendor=cisco AND product=ios AND version=15.2\(6\)e1s

vendor=cisco AND product=ios AND version=15.2\(6\)e2

vendor=cisco AND product=ios AND version=15.2\(6\)e2a

vendor=cisco AND product=ios AND version=15.2\(6\)e2b

vendor=cisco AND product=ios AND version=15.2\(6\)e3

vendor=cisco AND product=ios AND version=15.2\(6\)eb

vendor=cisco AND product=ios AND version=15.2\(7\)e

vendor=cisco AND product=ios AND version=15.2\(7\)e0a

vendor=cisco AND product=ios AND version=15.2\(7\)e0b

vendor=cisco AND product=ios AND version=15.2\(7\)e0s

vendor=cisco AND product=ios AND version=15.2\(7\)e1

vendor=cisco AND product=ios AND version=15.2\(7\)e1a

vendor=cisco AND product=ios AND version=15.2\(7\)e2

vendor=cisco AND product=ios AND version=15.2\(7\)e2a

vendor=cisco AND product=ios AND version=15.2\(7\)e2b

vendor=cisco AND product=ios AND version=15.2\(7\)e3

vendor=cisco AND product=ios AND version=15.2\(7a\)e0b

vendor=cisco AND product=ios AND version=15.2\(7b\)e0b

vendor=cisco AND product=ios AND version=15.3\(3\)jpc97

vendor=cisco AND product=ios AND version=15.4\(1\)sy

vendor=cisco AND product=ios AND version=15.4\(1\)sy1

vendor=cisco AND product=ios AND version=15.4\(1\)sy2

vendor=cisco AND product=ios AND version=15.4\(1\)sy3

vendor=cisco AND product=ios AND version=15.4\(1\)sy4

vendor=cisco AND product=ios AND version=15.5\(1\)sy

vendor=cisco AND product=ios AND version=15.5\(1\)sy1

vendor=cisco AND product=ios AND version=15.5\(1\)sy2

vendor=cisco AND product=ios AND version=15.5\(1\)sy3

vendor=cisco AND product=ios AND version=15.5\(1\)sy4

vendor=cisco AND product=ios AND version=15.5\(1\)sy5

vendor=cisco AND product=ios AND version=15.5\(1\)sy6

vendor=cisco AND product=ios AND version=15.5\(3\)m4

vendor=cisco AND product=ios AND version=15.5\(3\)m4a

vendor=cisco AND product=ios AND version=15.5\(3\)m4b

vendor=cisco AND product=ios AND version=15.5\(3\)m4c

vendor=cisco AND product=ios AND version=15.5\(3\)m5

vendor=cisco AND product=ios AND version=15.5\(3\)m6

vendor=cisco AND product=ios AND version=15.5\(3\)m6a

vendor=cisco AND product=ios AND version=15.5\(3\)m7

vendor=cisco AND product=ios AND version=15.5\(3\)m8

vendor=cisco AND product=ios AND version=15.5\(3\)m9

vendor=cisco AND product=ios AND version=15.5\(3\)m10

vendor=cisco AND product=ios AND version=15.5\(3\)m11

vendor=cisco AND product=ios AND version=15.5\(3\)s4

vendor=cisco AND product=ios AND version=15.5\(3\)s5

vendor=cisco AND product=ios AND version=15.5\(3\)s6

vendor=cisco AND product=ios AND version=15.5\(3\)s6a

vendor=cisco AND product=ios AND version=15.5\(3\)s6b

vendor=cisco AND product=ios AND version=15.5\(3\)s7

vendor=cisco AND product=ios AND version=15.5\(3\)s8

vendor=cisco AND product=ios AND version=15.5\(3\)s9

vendor=cisco AND product=ios AND version=15.5\(3\)s9a

vendor=cisco AND product=ios AND version=15.5\(3\)s10

vendor=cisco AND product=ios AND version=15.5\(3\)s10a

vendor=cisco AND product=ios AND version=15.6\(3\)m2

vendor=cisco AND product=ios AND version=15.6\(3\)m2a

vendor=cisco AND product=ios AND version=15.6\(3\)m3

vendor=cisco AND product=ios AND version=15.6\(3\)m3a

vendor=cisco AND product=ios AND version=15.6\(3\)m4

vendor=cisco AND product=ios AND version=15.6\(3\)m5

vendor=cisco AND product=ios AND version=15.6\(3\)m6

vendor=cisco AND product=ios AND version=15.6\(3\)m6a

vendor=cisco AND product=ios AND version=15.6\(3\)m6b

vendor=cisco AND product=ios AND version=15.6\(3\)m7

vendor=cisco AND product=ios AND version=15.6\(3\)m8

vendor=cisco AND product=ios AND version=15.6\(3\)m9

vendor=cisco AND product=ios AND version=15.7\(3\)m

vendor=cisco AND product=ios AND version=15.7\(3\)m0a

vendor=cisco AND product=ios AND version=15.7\(3\)m1

vendor=cisco AND product=ios AND version=15.7\(3\)m2

vendor=cisco AND product=ios AND version=15.7\(3\)m3

vendor=cisco AND product=ios AND version=15.7\(3\)m4

vendor=cisco AND product=ios AND version=15.7\(3\)m4a

vendor=cisco AND product=ios AND version=15.7\(3\)m4b

vendor=cisco AND product=ios AND version=15.7\(3\)m5

vendor=cisco AND product=ios AND version=15.7\(3\)m6

vendor=cisco AND product=ios AND version=15.7\(3\)m7

vendor=cisco AND product=ios AND version=15.8\(3\)m

vendor=cisco AND product=ios AND version=15.8\(3\)m0a

vendor=cisco AND product=ios AND version=15.8\(3\)m0b

vendor=cisco AND product=ios AND version=15.8\(3\)m1

vendor=cisco AND product=ios AND version=15.8\(3\)m1a

vendor=cisco AND product=ios AND version=15.8\(3\)m2

vendor=cisco AND product=ios AND version=15.8\(3\)m2a

vendor=cisco AND product=ios AND version=15.8\(3\)m3

vendor=cisco AND product=ios AND version=15.8\(3\)m3a

vendor=cisco AND product=ios AND version=15.8\(3\)m3b

vendor=cisco AND product=ios AND version=15.8\(3\)m4

vendor=cisco AND product=ios AND version=15.8\(3\)m5

vendor=cisco AND product=ios AND version=15.9\(3\)m

vendor=cisco AND product=ios AND version=15.9\(3\)m0a

vendor=cisco AND product=ios AND version=15.9\(3\)m1

vendor=cisco AND product=ios AND version=15.9\(3\)m2

vendor=cisco AND product=ios AND version=15.9\(3\)m2a

vendor=cisco AND product=ios_xe AND version=3.6.6e

vendor=cisco AND product=ios_xe AND version=3.6.7ae

vendor=cisco AND product=ios_xe AND version=3.6.7be

vendor=cisco AND product=ios_xe AND version=3.6.7e

vendor=cisco AND product=ios_xe AND version=3.6.8e

vendor=cisco AND product=ios_xe AND version=3.6.9ae

vendor=cisco AND product=ios_xe AND version=3.6.9e

vendor=cisco AND product=ios_xe AND version=3.6.10e

vendor=cisco AND product=ios_xe AND version=3.7.5e

vendor=cisco AND product=ios_xe AND version=3.8.4e

vendor=cisco AND product=ios_xe AND version=3.8.5ae

vendor=cisco AND product=ios_xe AND version=3.8.5e

vendor=cisco AND product=ios_xe AND version=3.8.6e

vendor=cisco AND product=ios_xe AND version=3.8.7e

vendor=cisco AND product=ios_xe AND version=3.8.8e

vendor=cisco AND product=ios_xe AND version=3.8.9e

vendor=cisco AND product=ios_xe AND version=3.8.10e

vendor=cisco AND product=ios_xe AND version=3.9.1e

vendor=cisco AND product=ios_xe AND version=3.9.2be

vendor=cisco AND product=ios_xe AND version=3.9.2e

vendor=cisco AND product=ios_xe AND version=3.10.0ce

vendor=cisco AND product=ios_xe AND version=3.10.0e

vendor=cisco AND product=ios_xe AND version=3.10.1ae

vendor=cisco AND product=ios_xe AND version=3.10.1e

vendor=cisco AND product=ios_xe AND version=3.10.1se

vendor=cisco AND product=ios_xe AND version=3.10.2e

vendor=cisco AND product=ios_xe AND version=3.10.3e

vendor=cisco AND product=ios_xe AND version=3.11.0e

vendor=cisco AND product=ios_xe AND version=3.11.1ae

vendor=cisco AND product=ios_xe AND version=3.11.1e

vendor=cisco AND product=ios_xe AND version=3.11.2ae

vendor=cisco AND product=ios_xe AND version=3.11.2e

vendor=cisco AND product=ios_xe AND version=3.11.3ae

vendor=cisco AND product=ios_xe AND version=3.11.3e

vendor=cisco AND product=ios_xe AND version=3.16.4as

vendor=cisco AND product=ios_xe AND version=3.16.4bs

vendor=cisco AND product=ios_xe AND version=3.16.4cs

vendor=cisco AND product=ios_xe AND version=3.16.4ds

vendor=cisco AND product=ios_xe AND version=3.16.4es

vendor=cisco AND product=ios_xe AND version=3.16.4gs

vendor=cisco AND product=ios_xe AND version=3.16.4s

vendor=cisco AND product=ios_xe AND version=3.16.5as

vendor=cisco AND product=ios_xe AND version=3.16.5bs

vendor=cisco AND product=ios_xe AND version=3.16.5s

vendor=cisco AND product=ios_xe AND version=3.16.6bs

vendor=cisco AND product=ios_xe AND version=3.16.6s

vendor=cisco AND product=ios_xe AND version=3.16.7as

vendor=cisco AND product=ios_xe AND version=3.16.7bs

vendor=cisco AND product=ios_xe AND version=3.16.7s

vendor=cisco AND product=ios_xe AND version=3.16.8s

vendor=cisco AND product=ios_xe AND version=3.16.9s

vendor=cisco AND product=ios_xe AND version=3.16.10as

vendor=cisco AND product=ios_xe AND version=3.16.10s

vendor=cisco AND product=ios_xe AND version=16.3.2

vendor=cisco AND product=ios_xe AND version=16.3.3

vendor=cisco AND product=ios_xe AND version=16.3.4

vendor=cisco AND product=ios_xe AND version=16.3.5

vendor=cisco AND product=ios_xe AND version=16.3.5b

vendor=cisco AND product=ios_xe AND version=16.3.6

vendor=cisco AND product=ios_xe AND version=16.3.7

vendor=cisco AND product=ios_xe AND version=16.3.8

vendor=cisco AND product=ios_xe AND version=16.3.9

vendor=cisco AND product=ios_xe AND version=16.3.10

vendor=cisco AND product=ios_xe AND version=16.3.11

vendor=cisco AND product=ios_xe AND version=16.4.1

vendor=cisco AND product=ios_xe AND version=16.4.2

vendor=cisco AND product=ios_xe AND version=16.4.3

vendor=cisco AND product=ios_xe AND version=16.5.1

vendor=cisco AND product=ios_xe AND version=16.5.1a

vendor=cisco AND product=ios_xe AND version=16.5.1b

vendor=cisco AND product=ios_xe AND version=16.5.2

vendor=cisco AND product=ios_xe AND version=16.5.3

vendor=cisco AND product=ios_xe AND version=16.6.1

vendor=cisco AND product=ios_xe AND version=16.6.2

vendor=cisco AND product=ios_xe AND version=16.6.3

vendor=cisco AND product=ios_xe AND version=16.6.4

vendor=cisco AND product=ios_xe AND version=16.6.4a

vendor=cisco AND product=ios_xe AND version=16.6.4s

vendor=cisco AND product=ios_xe AND version=16.6.5

vendor=cisco AND product=ios_xe AND version=16.6.5a

vendor=cisco AND product=ios_xe AND version=16.6.5b

vendor=cisco AND product=ios_xe AND version=16.6.6

vendor=cisco AND product=ios_xe AND version=16.6.7

vendor=cisco AND product=ios_xe AND version=16.6.7a

vendor=cisco AND product=ios_xe AND version=16.6.8

vendor=cisco AND product=ios_xe AND version=16.7.1

vendor=cisco AND product=ios_xe AND version=16.7.1a

vendor=cisco AND product=ios_xe AND version=16.7.1b

vendor=cisco AND product=ios_xe AND version=16.7.2

vendor=cisco AND product=ios_xe AND version=16.7.3

vendor=cisco AND product=ios_xe AND version=16.7.4

vendor=cisco AND product=ios_xe AND version=16.8.1

vendor=cisco AND product=ios_xe AND version=16.8.1a

vendor=cisco AND product=ios_xe AND version=16.8.1b

vendor=cisco AND product=ios_xe AND version=16.8.1c

vendor=cisco AND product=ios_xe AND version=16.8.1d

vendor=cisco AND product=ios_xe AND version=16.8.1e

vendor=cisco AND product=ios_xe AND version=16.8.1s

vendor=cisco AND product=ios_xe AND version=16.8.2

vendor=cisco AND product=ios_xe AND version=16.8.3

vendor=cisco AND product=ios_xe AND version=16.9.1

vendor=cisco AND product=ios_xe AND version=16.9.1a

vendor=cisco AND product=ios_xe AND version=16.9.1b

vendor=cisco AND product=ios_xe AND version=16.9.1c

vendor=cisco AND product=ios_xe AND version=16.9.1d

vendor=cisco AND product=ios_xe AND version=16.9.1s

vendor=cisco AND product=ios_xe AND version=16.9.2

vendor=cisco AND product=ios_xe AND version=16.9.2a

vendor=cisco AND product=ios_xe AND version=16.9.2s

vendor=cisco AND product=ios_xe AND version=16.9.3

vendor=cisco AND product=ios_xe AND version=16.9.3a

vendor=cisco AND product=ios_xe AND version=16.9.3h

vendor=cisco AND product=ios_xe AND version=16.9.3s

vendor=cisco AND product=ios_xe AND version=16.9.4

vendor=cisco AND product=ios_xe AND version=16.9.4c

vendor=cisco AND product=ios_xe AND version=16.9.5

vendor=cisco AND product=ios_xe AND version=16.9.5f

vendor=cisco AND product=ios_xe AND version=16.9.6

vendor=cisco AND product=ios_xe AND version=16.10.1

vendor=cisco AND product=ios_xe AND version=16.10.1a

vendor=cisco AND product=ios_xe AND version=16.10.1b

vendor=cisco AND product=ios_xe AND version=16.10.1c

vendor=cisco AND product=ios_xe AND version=16.10.1d

vendor=cisco AND product=ios_xe AND version=16.10.1e

vendor=cisco AND product=ios_xe AND version=16.10.1f

vendor=cisco AND product=ios_xe AND version=16.10.1g

vendor=cisco AND product=ios_xe AND version=16.10.1s

vendor=cisco AND product=ios_xe AND version=16.10.2

vendor=cisco AND product=ios_xe AND version=16.10.3

vendor=cisco AND product=ios_xe AND version=16.11.1

vendor=cisco AND product=ios_xe AND version=16.11.1a

vendor=cisco AND product=ios_xe AND version=16.11.1b

vendor=cisco AND product=ios_xe AND version=16.11.1c

vendor=cisco AND product=ios_xe AND version=16.11.1s

vendor=cisco AND product=ios_xe AND version=16.11.2

vendor=cisco AND product=ios_xe AND version=16.12.1

vendor=cisco AND product=ios_xe AND version=16.12.1a

vendor=cisco AND product=ios_xe AND version=16.12.1c

vendor=cisco AND product=ios_xe AND version=16.12.1s

vendor=cisco AND product=ios_xe AND version=16.12.1t

vendor=cisco AND product=ios_xe AND version=16.12.1w

vendor=cisco AND product=ios_xe AND version=16.12.1x

vendor=cisco AND product=ios_xe AND version=16.12.1y

vendor=cisco AND product=ios_xe AND version=16.12.1z

vendor=cisco AND product=ios_xe AND version=16.12.2

vendor=cisco AND product=ios_xe AND version=16.12.2a

vendor=cisco AND product=ios_xe AND version=16.12.2s

vendor=cisco AND product=ios_xe AND version=16.12.2t

vendor=cisco AND product=ios_xe AND version=16.12.3

vendor=cisco AND product=ios_xe AND version=16.12.3a

vendor=cisco AND product=ios_xe AND version=16.12.3s

vendor=cisco AND product=ios_xe AND version=16.12.4

vendor=cisco AND product=ios_xe AND version=16.12.4a

vendor=cisco AND product=ios_xe AND version=17.1.1

vendor=cisco AND product=ios_xe AND version=17.1.1a

vendor=cisco AND product=ios_xe AND version=17.1.1s

vendor=cisco AND product=ios_xe AND version=17.1.1t

vendor=cisco AND product=ios_xe AND version=17.1.2

vendor=cisco AND product=ios_xe AND version=17.2.1

vendor=cisco AND product=ios_xe AND version=17.2.1a

vendor=cisco AND product=ios_xe AND version=17.2.1r

vendor=cisco AND product=ios_xe AND version=17.2.1v

vendor=cisco AND product=ios_xe AND version=17.2.2

vendor=cisco AND product=ios_xe AND version=17.3.1

vendor=cisco AND product=ios_xe AND version=17.3.1a

vendor=cisco AND product=ios_xe AND version=17.3.1w

vendor=cisco AND product=ios_xe AND version=17.3.2

vendor=cisco AND product=ios_xe AND version=17.3.2a

Reference

20210324 Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability-Vendor Advisory

Keywords

CVE-2021-1377

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-1377

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures