Lucene search
K
Database
Vendors
Products
Years
CVSS
Scanner
Agent Scanning
API Scanning
Manual Audit
Perimeter Scanner
Scanning
Projects
Email
Webhook
Plugins
Resources
Documents
Blog
Glossary
FAQ
Pricing
Contacts
About Us
Partners
Branding Guideline
prionPRIOn knowledge basePRION:CVE-2021-27854
HistorySep 27, 2022 - 7:15 p.m.

Design/Logic Flaw

2022-09-2719:15:00
PRIOn knowledge base
www.prio-n.com
5

4.7 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

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

5 Medium

AI Score

Confidence

High

3.3 Low

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:A/AC:L/Au:N/C:N/I:P/A:N

0.001 Low

EPSS

Percentile

27.9%

JSON

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.

CPENameOperatorVersion
ieee_802.2eq<= 802.2h-1997
p802.1qeq<= d1.0

Related

cve 1
cvelist 1
redhatcve 1
f5 1
cisco 1
arista 1
cert 1
cve
cve
CVE-2021-27854
2022-09-27 19:15:00
cvelist
cvelist
L2 network filtering bypass using stacked VLAN0, LLC/SNAP headers, and Ethernet to Wifi frame translation
2022-09-27 00:00:00
redhatcve
redhatcve
CVE-2021-27854
2022-10-02 16:18:58
f5
f5
K45012151 : Layer 2 security bypass issue CVE-2021-27861, CVE-2021-27862, CVE-2021-27853, CVE-2021-27854
2022-12-09 00:00:00
cisco
cisco
Vulnerabilities in Layer 2 Network Security Controls Affecting Cisco Products: September 2022
2022-09-27 16:00:00
arista
arista
Security Advisory 0080
2023-09-28 00:00:00
cert
cert
L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers
2022-09-27 00:00:00

4.7 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

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

5 Medium

AI Score

Confidence

High

3.3 Low

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:A/AC:L/Au:N/C:N/I:P/A:N

0.001 Low

EPSS

Percentile

27.9%

JSON
Related for PRION:CVE-2021-27854
cve1cvelist1redhatcve1f51cisco1arista1cert1