CVE-2022-20728 Cisco Access Points VLAN Bypass from Native VLAN Vulnerability

A vulnerability in the client forwarding code of multiple Cisco Access Points APs could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards...

CVE-2022-20728 Cisco Access Points VLAN Bypass from Native VLAN Vulnerability

A vulnerability in the client forwarding code of multiple Cisco Access Points APs could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards...

CVE-2022-20728

CVE-2022-20728 describes a VLAN-bypass flaw in the client forwarding code of multiple Cisco Access Points. An unauthenticated, adjacent attacker can inject packets from the native VLAN to nonnative VLAN clients due to a logic error that forwards packets destined to a wireless client when received...

CVE-2022-20728: Improper Access Control

A vulnerability in the client forwarding code of multiple Cisco Access Points APs could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards...

CVE-2022-20728

A vulnerability in the client forwarding code of multiple Cisco Access Points APs could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards...

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...

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...

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...

Design/Logic Flaw

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...

CVE-2021-27854

CVE-2021-27854 : Layer-2 network filtering can be bypassed by VLAN 0 header stacks and LLC/SNAP header manipulation, including Ethernet↔Wi‑Fi frame translation. Exploitation requires adjacent access and is associated with the VLAN 0 header stack variant and LLC header invalid length variant. Affe...

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...

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...

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...

Design/Logic Flaw

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

CVE-2021-27853 vulnerability affects Layer 2 filtering controls by bypassing VLAN 0 header stacks and LLC/SNAP headers. Arista reports two variants: VLAN 0 header stack variant and LLC header invalid length variant, impacting EOS products, Wi‑Fi access points, and NetVisor OS. Effects include pot...

Cisco Access Points VLAN Bypass from Native VLAN Vulnerability

A vulnerability in the client forwarding code of multiple Cisco Access Points APs could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards...

PT-2022-4863 · Cisco · Cisco Ios +1

Name of the Vulnerable Software and Affected Versions: No specific software or versions are mentioned in the provided descriptions. Description: The issue is related to the implementation of the Ethernet encapsulation protocol, specifically concerning the combination of headers. This could allow ...

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...