Home/CVE/On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule whi
CVE

CVE-2021-28504

On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule whi

On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol field as expected.

HIGH · CVSS 7.5 EPSS 0.00267
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-284Improper Access Control
CWE-863Incorrect Authorization
▤

Affected Products & Versions

2
arista eos>= 4.26 and < 4.26.4m
arista eos>= 4.27 and < 4.27.1f
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · psirt@arista.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Apr 2022 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073MitigationVendor Advisory
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