An Improper Validation of Specified Type of Input vulnerability in the packet forwarding engine (pfe) Juniper Networks Junos OS on SRX5000 Series allows an unauthenticated, network based attacker to cause a Denial of Service (Dos).

When a non-clustered SRX5000 device receives a specifically malformed packet this will cause a flowd crash and restart.

This issue affects Junos OS:

  *  22.1 releases 22.1R1 and later before 22.2R3-S5,
  *  22.3 releases before 22.3R3-S4,
  *  22.4 releases before 22.4R3-S4,
  *  23.2 releases before 23.2R2-S2,
  *  23.4 releases before 23.4R2-S1,
  *  24.2 releases before 24.2R1-S1, 24.2R2.


Please note that the PR does indicate that earlier versions have been fixed as well, but these won't be adversely impacted by this.

Juniper Networks, Inc. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X

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

Juniper Networks, Inc. CWE-1287

Juniper Networks, Inc. https://supportportal.juniper.net/JSA88134 [No types assigned]