Input validation

An Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).

On all Junos OS Evolved platforms, when specific TCP packets are received on an open OFP port, the OFP crashes leading to a restart of Routine Engine (RE). Continuous receipt of these specific TCP packets will lead to a sustained Denial of Service (DoS) condition.

This issue affects:

Juniper Networks Junos OS Evolved

• All versions earlier than 21.2R3-S7-EVO;
• 21.3 versions earlier than 21.3R3-S5-EVO ;
• 21.4 versions earlier than 21.4R3-S5-EVO;
• 22.1 versions earlier than 22.1R3-S4-EVO;
• 22.2 versions earlier than 22.2R3-S3-EVO ;
• 22.3 versions earlier than 22.3R3-EVO;
• 22.4 versions earlier than 22.4R2-EVO, 22.4R3-EVO.