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CVE-2021-27861

L2 network filtering bypass using stacked VLAN0 and LLC/SNAP headers with invalid lengths PUBLISHED

Description (CNA)

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

Affected (CNA)

Vendor / productVersions
IEEE / 802.2affected 802.2h-1997 through 802.2h-1997
IETF / draft-ietf-v6ops-ra-guardaffected 08 through 08
IETF / P802.1Qaffected D1.0 through D1.0

CWE

CWE-130, CWE-290

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.