A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of certain Layer 2 frames. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.
References
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-quewedge-69BsHUBW | Patch Vendor Advisory |
Configurations
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Configuration 2 (hide)
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Configuration 3 (hide)
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Information
Published : 2021-09-22 20:15
Updated : 2022-10-24 13:02
NVD link : CVE-2021-1621
Mitre link : CVE-2021-1621
JSON object : View
CWE
Products Affected
cisco
- asr_1001-x_r
- isr_4431
- asr_1001-x
- isrv
- isr_4351
- asr_1001-hx
- asr_1006-x
- isr_1109-2p
- isr_4451-x
- isr_1111x-8p
- asr_1002-x_r
- asr_1002
- isr_1100-8p
- ios_xe
- asr_1013
- asr_1006
- isr_1100
- asr_1001
- asr_1000-x
- isr_4451
- isr_4221
- isr_1109-4p
- isr_1101-4p
- isr_4321
- isr_1100-4p
- isr_111x
- isr_1160
- isr_1120
- isr_4331
- isr_1000
- asr_1002-hx_r
- asr_1000
- asr_1002-x
- asr_1001-hx_r
- asr_1009-x
- asr_1023
- isr_1109
- asr_1002-hx
- isr_1111x
- csr_1000v
- isr_4000
- isr_1100-4g\/6g
- asr_1004
- isr_4461
- isr_1101