Tracker / CVE-2021-34713
CVE-2021-34713
High 7.4
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 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 attacker to cause the affected line card to reboot.
Affected products and versions
| cisco | ios_xr · 6.4 → 6.6.3 |
|---|---|
| cisco | ios_xr · 6.7 → 6.7.1 |
| cisco | ios_xr · 7.0 → 7.0.2 |
| cisco | ios_xr · 7.1 → 7.1.1 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.