Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2021-1377

Disclosure Date: March 24, 2021 •
CVE-2021-1377 CVSS v3 Base Score: 5.8
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

Add Assessment

No one has assessed this topic. Be the first to add your voice to the community.

CVSS V3 Severity and Metrics
Base Score:
5.8 Medium
Impact Score:
1.4
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
Low

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Cisco IOS n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • cisco

Products

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

Additional Info

Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Technical Analysis