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Product · IETF

draft-ietf-v6ops-ra-guard

3 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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  • Medium 4.7
    CVE-2021-27861

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

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

    IETF IEEE 802.2 P802.1Q
  • Medium 4.7
    CVE-2021-27854

    L2 network filtering bypass using stacked VLAN0, LLC/SNAP headers, and Ethernet to Wifi frame translation

    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.

    IETF IEEE 802.2 P802.1Q
  • Medium 4.7
    CVE-2021-27853

    L2 network filtering can be bypassed using stacked VLAN0 and LLC/SNAP headers

    Layer 2 network filtering capabilities such as IPv6 RA guard or ARP inspection can be bypassed using combinations of VLAN 0 headers and LLC/SNAP headers.

    IETF IEEE 802.2 P802.1Q