CVE-2021-27853

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 a remote attacker to cause a denial of service or implement a man-in-the-middle (MITM) attack. 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.