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Redhat.comRH:CVE-2021-27861HistoryOct 02, 2022 - 4:19 p.m.
CVE-2021-27861
2022-10-0216:19:02
redhat.com
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cve-2021-27861
layer 2 network
filtering capabilities
ipv6 ra guard
llc/snap headers
invalid length
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)
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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%
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