CVE-2021-27861
Medium
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)
SeverityMedium
CVSS4.7
Exploit probability—
ProductIeee 802.2
PublishedSep 27, 2022
First seenSep 27, 2022
Weakness typeCWE-130CWE-130CWE-290CWE-290
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ieee ieee_802.2 | v ≤ 802.2h-1997 | — |
| ietf p802.1q | v ≤ d1.0 | — |
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