Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-1377


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.


Published

2021-03-24T20:15:13.150

Last Modified

2024-11-21T05:44:12.877

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-399
  • Type: Primary
    NVD-CWE-noinfo

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios 12.2\(6\)i1 Yes
Operating System cisco ios 15.1\(3\)svr1 Yes
Operating System cisco ios 15.1\(3\)svr2 Yes
Operating System cisco ios 15.1\(3\)svr3 Yes
Operating System cisco ios 15.1\(3\)svs Yes
Operating System cisco ios 15.1\(3\)svs1 Yes
Operating System cisco ios 15.2\(2\)e6 Yes
Operating System cisco ios 15.2\(2\)e7 Yes
Operating System cisco ios 15.2\(2\)e7b Yes
Operating System cisco ios 15.2\(2\)e8 Yes
Operating System cisco ios 15.2\(2\)e9 Yes
Operating System cisco ios 15.2\(2\)e9a Yes
Operating System cisco ios 15.2\(2\)e10 Yes
Operating System cisco ios 15.2\(3\)e5 Yes
Operating System cisco ios 15.2\(4\)e4 Yes
Operating System cisco ios 15.2\(4\)e5 Yes
Operating System cisco ios 15.2\(4\)e5a Yes
Operating System cisco ios 15.2\(4\)e6 Yes
Operating System cisco ios 15.2\(4\)e7 Yes
Operating System cisco ios 15.2\(4\)e8 Yes
Operating System cisco ios 15.2\(4\)e9 Yes
Operating System cisco ios 15.2\(4\)e10 Yes
Operating System cisco ios 15.2\(4\)e10a Yes
Operating System cisco ios 15.2\(4\)ea6 Yes
Operating System cisco ios 15.2\(4\)ea7 Yes
Operating System cisco ios 15.2\(4\)ea8 Yes
Operating System cisco ios 15.2\(4\)ea9 Yes
Operating System cisco ios 15.2\(4\)ea9a Yes
Operating System cisco ios 15.2\(4\)ea10 Yes
Operating System cisco ios 15.2\(5\)e1 Yes
Operating System cisco ios 15.2\(5\)e2 Yes
Operating System cisco ios 15.2\(5\)e2b Yes
Operating System cisco ios 15.2\(5\)e2c Yes
Operating System cisco ios 15.2\(5\)ex Yes
Operating System cisco ios 15.2\(5a\)e1 Yes
Operating System cisco ios 15.2\(6\)e Yes
Operating System cisco ios 15.2\(6\)e0a Yes
Operating System cisco ios 15.2\(6\)e0c Yes
Operating System cisco ios 15.2\(6\)e1 Yes
Operating System cisco ios 15.2\(6\)e1a Yes
Operating System cisco ios 15.2\(6\)e1s Yes
Operating System cisco ios 15.2\(6\)e2 Yes
Operating System cisco ios 15.2\(6\)e2a Yes
Operating System cisco ios 15.2\(6\)e2b Yes
Operating System cisco ios 15.2\(6\)e3 Yes
Operating System cisco ios 15.2\(6\)eb Yes
Operating System cisco ios 15.2\(7\)e Yes
Operating System cisco ios 15.2\(7\)e0a Yes
Operating System cisco ios 15.2\(7\)e0b Yes
Operating System cisco ios 15.2\(7\)e0s Yes
Operating System cisco ios 15.2\(7\)e1 Yes
Operating System cisco ios 15.2\(7\)e1a Yes
Operating System cisco ios 15.2\(7\)e2 Yes
Operating System cisco ios 15.2\(7\)e2a Yes
Operating System cisco ios 15.2\(7\)e2b Yes
Operating System cisco ios 15.2\(7\)e3 Yes
Operating System cisco ios 15.2\(7a\)e0b Yes
Operating System cisco ios 15.2\(7b\)e0b Yes
Operating System cisco ios 15.3\(3\)jpc97 Yes
Operating System cisco ios 15.4\(1\)sy Yes
Operating System cisco ios 15.4\(1\)sy1 Yes
Operating System cisco ios 15.4\(1\)sy2 Yes
Operating System cisco ios 15.4\(1\)sy3 Yes
Operating System cisco ios 15.4\(1\)sy4 Yes
Operating System cisco ios 15.5\(1\)sy Yes
Operating System cisco ios 15.5\(1\)sy1 Yes
Operating System cisco ios 15.5\(1\)sy2 Yes
Operating System cisco ios 15.5\(1\)sy3 Yes
Operating System cisco ios 15.5\(1\)sy4 Yes
Operating System cisco ios 15.5\(1\)sy5 Yes
Operating System cisco ios 15.5\(1\)sy6 Yes
Operating System cisco ios 15.5\(3\)m4 Yes
Operating System cisco ios 15.5\(3\)m4a Yes
Operating System cisco ios 15.5\(3\)m4b Yes
Operating System cisco ios 15.5\(3\)m4c Yes
Operating System cisco ios 15.5\(3\)m5 Yes
Operating System cisco ios 15.5\(3\)m6 Yes
Operating System cisco ios 15.5\(3\)m6a Yes
Operating System cisco ios 15.5\(3\)m7 Yes
Operating System cisco ios 15.5\(3\)m8 Yes
Operating System cisco ios 15.5\(3\)m9 Yes
Operating System cisco ios 15.5\(3\)m10 Yes
Operating System cisco ios 15.5\(3\)m11 Yes
Operating System cisco ios 15.5\(3\)s4 Yes
Operating System cisco ios 15.5\(3\)s5 Yes
Operating System cisco ios 15.5\(3\)s6 Yes
Operating System cisco ios 15.5\(3\)s6a Yes
Operating System cisco ios 15.5\(3\)s6b Yes
Operating System cisco ios 15.5\(3\)s7 Yes
Operating System cisco ios 15.5\(3\)s8 Yes
Operating System cisco ios 15.5\(3\)s9 Yes
Operating System cisco ios 15.5\(3\)s9a Yes
Operating System cisco ios 15.5\(3\)s10 Yes
Operating System cisco ios 15.5\(3\)s10a Yes
Operating System cisco ios 15.6\(3\)m2 Yes
Operating System cisco ios 15.6\(3\)m2a Yes
Operating System cisco ios 15.6\(3\)m3 Yes
Operating System cisco ios 15.6\(3\)m3a Yes
Operating System cisco ios 15.6\(3\)m4 Yes
Operating System cisco ios 15.6\(3\)m5 Yes
Operating System cisco ios 15.6\(3\)m6 Yes
Operating System cisco ios 15.6\(3\)m6a Yes
Operating System cisco ios 15.6\(3\)m6b Yes
Operating System cisco ios 15.6\(3\)m7 Yes
Operating System cisco ios 15.6\(3\)m8 Yes
Operating System cisco ios 15.6\(3\)m9 Yes
Operating System cisco ios 15.7\(3\)m Yes
Operating System cisco ios 15.7\(3\)m0a Yes
Operating System cisco ios 15.7\(3\)m1 Yes
Operating System cisco ios 15.7\(3\)m2 Yes
Operating System cisco ios 15.7\(3\)m3 Yes
Operating System cisco ios 15.7\(3\)m4 Yes
Operating System cisco ios 15.7\(3\)m4a Yes
Operating System cisco ios 15.7\(3\)m4b Yes
Operating System cisco ios 15.7\(3\)m5 Yes
Operating System cisco ios 15.7\(3\)m6 Yes
Operating System cisco ios 15.7\(3\)m7 Yes
Operating System cisco ios 15.8\(3\)m Yes
Operating System cisco ios 15.8\(3\)m0a Yes
Operating System cisco ios 15.8\(3\)m0b Yes
Operating System cisco ios 15.8\(3\)m1 Yes
Operating System cisco ios 15.8\(3\)m1a Yes
Operating System cisco ios 15.8\(3\)m2 Yes
Operating System cisco ios 15.8\(3\)m2a Yes
Operating System cisco ios 15.8\(3\)m3 Yes
Operating System cisco ios 15.8\(3\)m3a Yes
Operating System cisco ios 15.8\(3\)m3b Yes
Operating System cisco ios 15.8\(3\)m4 Yes
Operating System cisco ios 15.8\(3\)m5 Yes
Operating System cisco ios 15.9\(3\)m Yes
Operating System cisco ios 15.9\(3\)m0a Yes
Operating System cisco ios 15.9\(3\)m1 Yes
Operating System cisco ios 15.9\(3\)m2 Yes
Operating System cisco ios 15.9\(3\)m2a Yes
Operating System cisco ios_xe 3.6.6e Yes
Operating System cisco ios_xe 3.6.7ae Yes
Operating System cisco ios_xe 3.6.7be Yes
Operating System cisco ios_xe 3.6.7e Yes
Operating System cisco ios_xe 3.6.8e Yes
Operating System cisco ios_xe 3.6.9ae Yes
Operating System cisco ios_xe 3.6.9e Yes
Operating System cisco ios_xe 3.6.10e Yes
Operating System cisco ios_xe 3.7.5e Yes
Operating System cisco ios_xe 3.8.4e Yes
Operating System cisco ios_xe 3.8.5ae Yes
Operating System cisco ios_xe 3.8.5e Yes
Operating System cisco ios_xe 3.8.6e Yes
Operating System cisco ios_xe 3.8.7e Yes
Operating System cisco ios_xe 3.8.8e Yes
Operating System cisco ios_xe 3.8.9e Yes
Operating System cisco ios_xe 3.8.10e Yes
Operating System cisco ios_xe 3.9.1e Yes
Operating System cisco ios_xe 3.9.2be Yes
Operating System cisco ios_xe 3.9.2e Yes
Operating System cisco ios_xe 3.10.0ce Yes
Operating System cisco ios_xe 3.10.0e Yes
Operating System cisco ios_xe 3.10.1ae Yes
Operating System cisco ios_xe 3.10.1e Yes
Operating System cisco ios_xe 3.10.1se Yes
Operating System cisco ios_xe 3.10.2e Yes
Operating System cisco ios_xe 3.10.3e Yes
Operating System cisco ios_xe 3.11.0e Yes
Operating System cisco ios_xe 3.11.1ae Yes
Operating System cisco ios_xe 3.11.1e Yes
Operating System cisco ios_xe 3.11.2ae Yes
Operating System cisco ios_xe 3.11.2e Yes
Operating System cisco ios_xe 3.11.3ae Yes
Operating System cisco ios_xe 3.11.3e Yes
Operating System cisco ios_xe 3.16.4as Yes
Operating System cisco ios_xe 3.16.4bs Yes
Operating System cisco ios_xe 3.16.4cs Yes
Operating System cisco ios_xe 3.16.4ds Yes
Operating System cisco ios_xe 3.16.4es Yes
Operating System cisco ios_xe 3.16.4gs Yes
Operating System cisco ios_xe 3.16.4s Yes
Operating System cisco ios_xe 3.16.5as Yes
Operating System cisco ios_xe 3.16.5bs Yes
Operating System cisco ios_xe 3.16.5s Yes
Operating System cisco ios_xe 3.16.6bs Yes
Operating System cisco ios_xe 3.16.6s Yes
Operating System cisco ios_xe 3.16.7as Yes
Operating System cisco ios_xe 3.16.7bs Yes
Operating System cisco ios_xe 3.16.7s Yes
Operating System cisco ios_xe 3.16.8s Yes
Operating System cisco ios_xe 3.16.9s Yes
Operating System cisco ios_xe 3.16.10as Yes
Operating System cisco ios_xe 3.16.10s Yes
Operating System cisco ios_xe 16.3.2 Yes
Operating System cisco ios_xe 16.3.3 Yes
Operating System cisco ios_xe 16.3.4 Yes
Operating System cisco ios_xe 16.3.5 Yes
Operating System cisco ios_xe 16.3.5b Yes
Operating System cisco ios_xe 16.3.6 Yes
Operating System cisco ios_xe 16.3.7 Yes
Operating System cisco ios_xe 16.3.8 Yes
Operating System cisco ios_xe 16.3.9 Yes
Operating System cisco ios_xe 16.3.10 Yes
Operating System cisco ios_xe 16.3.11 Yes
Operating System cisco ios_xe 16.4.1 Yes
Operating System cisco ios_xe 16.4.2 Yes
Operating System cisco ios_xe 16.4.3 Yes
Operating System cisco ios_xe 16.5.1 Yes
Operating System cisco ios_xe 16.5.1a Yes
Operating System cisco ios_xe 16.5.1b Yes
Operating System cisco ios_xe 16.5.2 Yes
Operating System cisco ios_xe 16.5.3 Yes
Operating System cisco ios_xe 16.6.1 Yes
Operating System cisco ios_xe 16.6.2 Yes
Operating System cisco ios_xe 16.6.3 Yes
Operating System cisco ios_xe 16.6.4 Yes
Operating System cisco ios_xe 16.6.4a Yes
Operating System cisco ios_xe 16.6.4s Yes
Operating System cisco ios_xe 16.6.5 Yes
Operating System cisco ios_xe 16.6.5a Yes
Operating System cisco ios_xe 16.6.5b Yes
Operating System cisco ios_xe 16.6.6 Yes
Operating System cisco ios_xe 16.6.7 Yes
Operating System cisco ios_xe 16.6.7a Yes
Operating System cisco ios_xe 16.6.8 Yes
Operating System cisco ios_xe 16.7.1 Yes
Operating System cisco ios_xe 16.7.1a Yes
Operating System cisco ios_xe 16.7.1b Yes
Operating System cisco ios_xe 16.7.2 Yes
Operating System cisco ios_xe 16.7.3 Yes
Operating System cisco ios_xe 16.7.4 Yes
Operating System cisco ios_xe 16.8.1 Yes
Operating System cisco ios_xe 16.8.1a Yes
Operating System cisco ios_xe 16.8.1b Yes
Operating System cisco ios_xe 16.8.1c Yes
Operating System cisco ios_xe 16.8.1d Yes
Operating System cisco ios_xe 16.8.1e Yes
Operating System cisco ios_xe 16.8.1s Yes
Operating System cisco ios_xe 16.8.2 Yes
Operating System cisco ios_xe 16.8.3 Yes
Operating System cisco ios_xe 16.9.1 Yes
Operating System cisco ios_xe 16.9.1a Yes
Operating System cisco ios_xe 16.9.1b Yes
Operating System cisco ios_xe 16.9.1c Yes
Operating System cisco ios_xe 16.9.1d Yes
Operating System cisco ios_xe 16.9.1s Yes
Operating System cisco ios_xe 16.9.2 Yes
Operating System cisco ios_xe 16.9.2a Yes
Operating System cisco ios_xe 16.9.2s Yes
Operating System cisco ios_xe 16.9.3 Yes
Operating System cisco ios_xe 16.9.3a Yes
Operating System cisco ios_xe 16.9.3h Yes
Operating System cisco ios_xe 16.9.3s Yes
Operating System cisco ios_xe 16.9.4 Yes
Operating System cisco ios_xe 16.9.4c Yes
Operating System cisco ios_xe 16.9.5 Yes
Operating System cisco ios_xe 16.9.5f Yes
Operating System cisco ios_xe 16.9.6 Yes
Operating System cisco ios_xe 16.10.1 Yes
Operating System cisco ios_xe 16.10.1a Yes
Operating System cisco ios_xe 16.10.1b Yes
Operating System cisco ios_xe 16.10.1c Yes
Operating System cisco ios_xe 16.10.1d Yes
Operating System cisco ios_xe 16.10.1e Yes
Operating System cisco ios_xe 16.10.1f Yes
Operating System cisco ios_xe 16.10.1g Yes
Operating System cisco ios_xe 16.10.1s Yes
Operating System cisco ios_xe 16.10.2 Yes
Operating System cisco ios_xe 16.10.3 Yes
Operating System cisco ios_xe 16.11.1 Yes
Operating System cisco ios_xe 16.11.1a Yes
Operating System cisco ios_xe 16.11.1b Yes
Operating System cisco ios_xe 16.11.1c Yes
Operating System cisco ios_xe 16.11.1s Yes
Operating System cisco ios_xe 16.11.2 Yes
Operating System cisco ios_xe 16.12.1 Yes
Operating System cisco ios_xe 16.12.1a Yes
Operating System cisco ios_xe 16.12.1c Yes
Operating System cisco ios_xe 16.12.1s Yes
Operating System cisco ios_xe 16.12.1t Yes
Operating System cisco ios_xe 16.12.1w Yes
Operating System cisco ios_xe 16.12.1x Yes
Operating System cisco ios_xe 16.12.1y Yes
Operating System cisco ios_xe 16.12.1z Yes
Operating System cisco ios_xe 16.12.2 Yes
Operating System cisco ios_xe 16.12.2a Yes
Operating System cisco ios_xe 16.12.2s Yes
Operating System cisco ios_xe 16.12.2t Yes
Operating System cisco ios_xe 16.12.3 Yes
Operating System cisco ios_xe 16.12.3a Yes
Operating System cisco ios_xe 16.12.3s Yes
Operating System cisco ios_xe 16.12.4 Yes
Operating System cisco ios_xe 16.12.4a Yes
Operating System cisco ios_xe 17.1.1 Yes
Operating System cisco ios_xe 17.1.1a Yes
Operating System cisco ios_xe 17.1.1s Yes
Operating System cisco ios_xe 17.1.1t Yes
Operating System cisco ios_xe 17.1.2 Yes
Operating System cisco ios_xe 17.2.1 Yes
Operating System cisco ios_xe 17.2.1a Yes
Operating System cisco ios_xe 17.2.1r Yes
Operating System cisco ios_xe 17.2.1v Yes
Operating System cisco ios_xe 17.2.2 Yes
Operating System cisco ios_xe 17.3.1 Yes
Operating System cisco ios_xe 17.3.1a Yes
Operating System cisco ios_xe 17.3.1w Yes
Operating System cisco ios_xe 17.3.2 Yes
Operating System cisco ios_xe 17.3.2a Yes

References