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CVE PROGRAM SOURCE RECORD4.7 Medium

CVE-2021-27862

L2 network filtering bypass using stacked VLAN0 and LLC/SNAP headers with an invalid length during Ethernet to Wifi frame translation

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Status
Published
Published
Updated
Assigning organization
certcc

Description

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion (and optionally VLAN0 headers).

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

IEEE 802.2

  • 802.2h-1997 to ≤ 802.2h-1997affected

IETF draft-ietf-v6ops-ra-guard-08

  • 08 to ≤ 08affected

References