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ietf p802.1q vulnerabilities and exploits

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4.7
CVSSv3
CVE-2021-27854
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.
Ieee Ieee 802.2Ietf P802.1q
4.7
CVSSv3
CVE-2021-27861
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
Ieee Ieee 802.2Ietf P802.1q
4.7
CVSSv3
CVE-2021-27862
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).
Ieee Ieee 802.2Ietf P802.1q
4.7
CVSSv3
CVE-2021-27853
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.
Ieee Ieee 802.2Ietf P802.1qCisco Catalyst 6503-e Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6504-e Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6506-e Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6509-e Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6509-neb-a Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6509-v-e Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6513-e Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6807-xl Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6840-x Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6880-x Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst C6816-x-le Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst C6824-x-le-40g Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst C6832-x-le Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst C6840-x-le-40g Firmware 15.5\\(01.01.85\\)sy07Cisco Catalyst 6800ia Firmware 15.5\\(01.01.85\\)sy07Cisco Ios Xe 17.4.1Cisco Ios Xe 17.6.1Cisco Ios Xe 17.3.3Cisco Ios Xe 15.2\\(07\\)e03Cisco Ios Xe 15.2\\(07\\)e02
CVSSv3
CVSSv2
CVSSv3
VMScore
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