CVE-2023-36843 (published 2023-10-12T22:58:49.192Z)

An Improper Handling of Inconsistent Special Elements vulnerability in the Junos Services Framework (jsf) module of Juniper Networks Junos OS allows an unauthenticated network based attacker to cause a crash in the Packet Forwarding Engine (pfe) and thereby resulting in a Denial of Service (DoS).

Upon receiving malformed SSL traffic, the PFE crashes. A manual restart will be needed to recover the device.

This issue only affects devices with Juniper Networks Advanced Threat Prevention (ATP) Cloud enabled with Encrypted Traffic Insights (configured via ‘security-metadata-streaming policy’).

This issue affects Juniper Networks Junos OS:



  *  All versions prior to 20.4R3-S8, 20.4R3-S9;
  *  21.1 version 21.1R1 and later versions;
  *  21.2 versions prior to 21.2R3-S6;
  *  21.3 versions prior to 21.3R3-S5;
  *  21.4 versions prior to 21.4R3-S5;
  *  22.1 versions prior to 22.1R3-S4;
  *  22.2 versions prior to 22.2R3-S2;
  *  22.3 versions prior to 22.3R2-S2, 22.3R3;
  *  22.4 versions prior to 22.4R2-S1, 22.4R3;







Affected products: Vendor: Juniper Networks
Product: Junos OS
Versions: 0, 21.1R1, 21.2, 21.3, 21.4, 22.1, 22.2, 22.3, 22.4