CVE-2021-28511
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
40.2%
This advisory documents the impact of an internally found vulnerability in Arista EOS for security ACL bypass. The impact of this vulnerability is that the security ACL drop rule might be bypassed if a NAT ACL rule filter with permit action matches the packet flow. This could allow a host with an IP address in a range that matches the range allowed by a NAT ACL and a range denied by a Security ACL to be forwarded incorrectly as it should have been denied by the Security ACL. This can enable an ACL bypass.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| arista | 7050cx3-32s | - | cpe:2.3:h:arista:7050cx3-32s:-:*:*:*:*:*:*:* |
| arista | 7050cx3m-32s | - | cpe:2.3:h:arista:7050cx3m-32s:-:*:*:*:*:*:*:* |
| arista | 7050sx3-48c8 | - | cpe:2.3:h:arista:7050sx3-48c8:-:*:*:*:*:*:*:* |
| arista | 7050sx3-48yc | - | cpe:2.3:h:arista:7050sx3-48yc:-:*:*:*:*:*:*:* |
| arista | 7050sx3-48yc12 | - | cpe:2.3:h:arista:7050sx3-48yc12:-:*:*:*:*:*:*:* |
| arista | 7050sx3-48yc8 | - | cpe:2.3:h:arista:7050sx3-48yc8:-:*:*:*:*:*:*:* |
| arista | 7050sx3-96yc8 | - | cpe:2.3:h:arista:7050sx3-96yc8:-:*:*:*:*:*:*:* |
| arista | 7050tx3-48c8 | - | cpe:2.3:h:arista:7050tx3-48c8:-:*:*:*:*:*:*:* |
| arista | 720xp-24y6 | - | cpe:2.3:h:arista:720xp-24y6:-:*:*:*:*:*:*:* |
| arista | 720xp-24zy4 | - | cpe:2.3:h:arista:720xp-24zy4:-:*:*:*:*:*:*:* |
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
40.2%