543
VMScore

CVE-2021-34713

Published: 09/09/2021 Updated: 07/11/2023
CVSS v2 Base Score: 6.1 | Impact Score: 6.9 | Exploitability Score: 6.5
CVSS v3 Base Score: 7.4 | Impact Score: 4 | Exploitability Score: 2.8
VMScore: 543
Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Summary

A vulnerability in the Layer 2 punt code of Cisco IOS XR Software running on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent malicious user to cause the affected line card to reboot. This vulnerability is due to incorrect handling of specific Ethernet frames that cause a spin loop that can make the network processors unresponsive. An attacker could exploit this vulnerability by sending specific types of Ethernet frames on the segment where the affected line cards are attached. A successful exploit could allow the malicious user to cause the affected line card to reboot.

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cisco ios_xr

Vendor Advisories

A vulnerability in the Layer 2 punt code of Cisco IOS XR Software running on Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to cause the affected line card to reboot This vulnerability is due to incorrect handling of specific Ethernet frames that cause a spin loop that can make the network proc ...