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HistorySep 27, 2022 - 7:15 p.m.
CVE-2021-27861
cve-2021-27861
network filtering
ipv6 ra guard
llc/snap headers
vlan0 headers
4.7 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
39.4%
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
Affected configurations
Node
ieeeieee_802.2Range≤802.2h-1997
Node
ietfp802.1qRange≤d1.0
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f5
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cert
cert
4.7 Medium
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
39.4%
Related for NVD:CVE-2021-27861