CVE - CVE-2021-27854

CVE-ID
CVE-2021-27854	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://blog.champtar.fr/VLAN0_LLC_SNAP/ MISC:https://kb.cert.org/vuls/id/855201 MISC:https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ URL:https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ MISC:https://standards.ieee.org/ieee/802.1Q/10323/ URL:https://standards.ieee.org/ieee/802.1Q/10323/ MISC:https://standards.ieee.org/ieee/802.2/1048/ URL:https://standards.ieee.org/ieee/802.2/1048/
Assigning CNA
CERT/CC
Date Record Created
20210301	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210301)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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