Description
An Improper Handling of Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker executing a CLI command to cause a Denial of Service (DoS).
When asregex-optimized is configured and a specific "show route as-path" CLI command is executed, the rpd crashes and restarts. Repeated execution of this command will cause a sustained DoS condition.
This issue affects Junos OS:
* All versions before 21.2R3-S9,
* from 21.4 before 21.4R3-S10,
* from 22.2 before 22.2R3-S6,
* from 22.4 before 22.4R3-S6,
* from 23.2 before 23.2R2-S3,
* from 23.4 before 23.4R2-S4,
* from 24.2 before 24.2R2.
and Junos OS Evolved:
* All versions before 21.2R3-S9-EVO,
* from 21.4-EVO before 21.4R3-S10-EVO,
* from 22.2-EVO before 22.2R3-S6-EVO,
* from 22.4-EVO before 22.4R3-S6-EVO,
* from 23.2-EVO before 23.2R2-S3-EVO,
* from 23.4-EVO before 23.4R2-S4-EVO,
* from 24.2-EVO before 24.2R2-EVO.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | < 21.2R3-S9, 21.4 – < 21.4R3-S10, 22.2 – < 22.2R3-S6, 22.4 – < 22.4R3-S6, 23.2 – < 23.2R2-S3, 23.4 – < 23.4R2-S4, 24.2 – < 24.2R2 | 21.2R3-S9 |
| Juniper Networks | Junos OS Evolved | < 21.2R3-S9-EVO, 21.4-EVO – < 21.4R3-S10-EVO, 22.2-EVO – < 22.2R3-S6-EVO, 22.4-EVO – < 22.4R3-S6-EVO, 23.2-EVO – < 23.2R2-S3-EVO, 23.4-EVO – < 23.4R2-S4-EVO, 24.2-EVO – < 24.2R2-EVO | 21.2R3-S9-EVO |
Advisories 1
- WID-SEC-2025-0777 Juniper JUNOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 9, 2025
References
- https://supportportal.juniper.net/JSA96462 vendor-advisory