Description
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).
On Junos MX Series platforms with Precision Time Protocol (PTP) configured, a prolonged routing protocol churn can lead to an FPC crash and restart.
This issue affects Juniper Networks Junos OS on MX Series:
* All versions prior to 20.4R3-S4; * 21.1 version 21.1R1 and later versions; * 21.2 versions prior to 21.2R3-S2; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3; * 22.1 versions prior to 22.1R3; * 22.2 versions prior to 22.2R1-S1, 22.2R2.
Metrics
CVSS 3.1 7.5/10
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-S4; >= 21.1R1, < 21.1*; >= 21.2, < 21.2R3-S2; >= 21.3, < 21.3R3-S5; >= 21.4, < 21.4R3; >= 22.1, < 22.1R3; >= 22.2, < 22.2R1-S1, 22.2R2 |
| juniper_networks | junos_os | < 20.4r3-s4; >= 21.1r1, < 21.1*; >= 21.2, < 21.2r3-s2; >= 21.3, < 21.3r3-s5; >= 21.4, < 21.4r3; >= 22.1, < 22.1r3; >= 22.2, < 22.2r1-s1,22.2r2 |
References
- https://supportportal.juniper.net/JSA73165Vendor Advisory
- https://supportportal.juniper.net/JSA73165Vendor Advisory
Timeline
- Published
- Oct 13, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified