Layer 2 network filtering capabilities such as IPv6 RA... · CVE-2021-27861 · GitHub Advisory Database · GitHub

Layer 2 network filtering capabilities such as IPv6 RA...

Moderate severity Unreviewed Published Sep 28, 2022 to the GitHub Advisory Database • Updated Feb 3, 2023

Package

No package listed— Suggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

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

References

Published by the National Vulnerability Database

Sep 27, 2022

Published to the GitHub Advisory Database Sep 28, 2022

Last updated Feb 3, 2023

Severity

Moderate

4.7

/ 10

CVSS base metrics

Attack vector

Adjacent

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N