Description
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;
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos OS | < 20.4R3-S8; >= 21.1R1, < 21.1*; >= 21.2, < 21.2R3-S6; >= 21.3, < 21.3R3-S5; >= 21.4, < 21.4R3-S5; >= 22.1, < 22.1R3-S4; >= 22.2, < 22.2R3-S2; >= 22.3, < 22.3R2-S2, 22.3R3; >= 22.4, < 22.4R2-S1, 22.4R3 |
| juniper_networks | junos_os | < 20.4r3-s8; >= 21.1r1, < 21.1; >= 21.2, < 21.2r3-s6; >= 21.3, < 21.3r3-s5; >= 21.4, < 21.4r3-s5; >= 22.1, < 22.1r3-s2; >= 22.2, < 22.2r3-s2; >= 22.3, < 22.3r2-s2; >= 22.3, < 22.3r3; >= 22.4, < 22.4r2-s2; >= 22.4, < 22.4r3 |
References
- https://supportportal.juniper.net/JSA73174Vendor Advisory
- https://supportportal.juniper.net/JSA73174Vendor Advisory
Timeline
- Published
- Oct 12, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified