Authentication Bypass by Spoofing
CVE-2021-27861
Summary
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
- LOW
- ADJACENT_NETWORK
- LOW
- CHANGED
- NONE
- NONE
- NONE
- NONE
CWE-290 - Authentication Bypass by Spoofing
This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
References
Advisory Timeline
- Published