Description
An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).
When a specific "clear" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.
The crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.
This issue affects Junos OS Evolved:
* All versions before 20.4R3-S9-EVO,
* from 21.2-EVO before 21.2R3-S7-EVO,
* from 21.3-EVO before 21.3R3-S5-EVO,
* from 21.4-EVO before 21.4R3-S6-EVO,
* from 22.1-EVO before 22.1R3-S4-EVO,
* from 22.2-EVO before 22.2R3-S3-EVO,
* from 22.3-EVO before 22.3R3-S3-EVO,
* from 22.4-EVO before 22.4R3-EVO,
* from 23.2-EVO before 23.2R2-EVO.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS Evolved | < 20.4R3-S9-EVO, 21.2-EVO – < 21.2R3-S7-EVO, 21.3-EVO – < 21.3R3-S5-EVO, 21.4-EVO – < 21.4R3-S6-EVO, 22.1-EVO – < 22.1R3-S4-EVO, 22.2-EVO – < 22.2R3-S3-EVO, 22.3-EVO – < 22.3R3-S3-EVO, 22.4-EVO – < 22.4R3-EVO, 23.2-EVO – < 23.2R2-EVO | 20.4R3-S9-EVO |
Advisories 1
- WID-SEC-2024-1591 Juniper JUNOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2024
References
- https://supportportal.juniper.net/JSA82978 vendor-advisory