Junos OS: SRX Series: The PFE will crash on receiving malformed SSL traffic when Sky ATP is enabled

Summary

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;

Timeline

1. Oct 12, 2023, 10:58 PM UTCCVE published
2. Sep 18, 2024, 5:43 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Sep 18, 2024, 5:53 PM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 20.4R3-S8; From 21.1R1; From 21.2 · fixed in 21.2R3-S6; From 21.3 · fixed in 21.3R3-S5; From 21.4 · fixed in 21.4R3-S5; From 22.1 · fixed in 22.1R3-S4; From 22.2 · fixed in 22.2R3-S2

References 1