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.

Juniper Networks, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Juniper Networks, Inc. CWE-228

Juniper Networks, Inc. https://supportportal.juniper.net/JSA75753 [No types assigned]

Juniper Networks, Inc. https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N [No types assigned]