CVE-2021-0289 Junos OS: User-defined ARP Policer isn't applied on Aggregated Ethernet (AE) interface until firewall process is restarted

When user-defined ARP Policer is configured and applied on one or more Aggregated Ethernet AE interface units, a Time-of-check Time-of-use TOCTOU Race Condition vulnerability between the Device Control Daemon DCD and firewall process dfwd daemons of Juniper Networks Junos OS allows an attacker to...

CVE-2021-0289

The CVE-2021-0289 issue in Juniper Junos OS is a TOCTOU race condition between the Device Control Daemon (DCD) and the firewall process (dfwd) that can bypass a user-defined ARP Policer on AE interfaces. Affected software includes Junos OS across multiple releases (from 5.6R1 up to but excluding ...

Juniper Junos OS Vulnerability (JSA11191)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA11191 advisory. - When user-defined ARP Policer is configured and applied on one or more Aggregated Ethernet AE interface units, a Time-of-check Time-of-use TOCTOU Race Condition...