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...

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...

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...

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...

Security Advisory 0080

Security Advisory 0080 . CSAF PDF Date: September 28th 2023 Revision | Date | Changes ---|---|--- 1.5 | September 28th 2023 | Update to include 4.29 to EOS Releases that resolve the CVE's 1.4 | January 11th 2023 | Update the fixed release info of NetVisor OS Software 1.3 | October 24th 2022 |...

L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers

Overview Layer-2 L2 network security controls provided by various devices, such as switches, routers, and operating systems, can be bypassed by stacking Ethernet protocol headers. An attacker can send crafted packets through vulnerable devices to cause Denial-of-service DoS or to perform a...