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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published: 2022-08-05T16:47:31.584165Z

Updated: 2024-09-16T17:15:30.137Z

Reserved: 2021-03-16T00:00:00

Link: CVE-2021-28511

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-08-05T17:15:07.957

Modified: 2024-11-21T05:59:48.747

Link: CVE-2021-28511

cve-icon Redhat

No data.