CVE-2021-28504
Last modified
CVE-2021-28504 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arista | Eos | >= 4.26, < 4.26.4m |
| Arista | Eos | >= 4.27, < 4.27.1f |
References
- https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073Mitigation, Vendor Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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