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CVE-2021-1377
CVE ID
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CVE-2021-1377
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
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.
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CVSS V3 Severity and Metrics
General Information
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
References
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below: