An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or LC9600, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS).
This issue can occur in two scenarios:
1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.)
2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. Please note that the CVSS score is for the formally more severe issue 1.
The CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
This issue affects Junos OS:
* All versions before 21.2R3-S4,
* 21.4 versions before 21.4R2,
* 22.2 versions before 22.2R3-S2;
Junos OS Evolved:
* All versions before 21.2R3-S8-EVO,
* 21.4 versions before 21.4R2-EVO.
CVSS
No CVSS.
References
| Link | Resource |
|---|---|
| https://supportportal.juniper.net/JSA83002 | Vendor Advisory |
| https://supportportal.juniper.net/JSA83002 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
08 Aug 2025, 16:43
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Juniper junos Os Evolved
Juniper Juniper junos |
|
| References | () https://supportportal.juniper.net/JSA83002 - Vendor Advisory | |
| CPE | cpe:2.3:o:juniper:junos:22.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s7:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:21.2:r3:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : unknown |
11 Jul 2024, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-07-11 17:15
Updated : 2025-08-08 16:43
NVD link : CVE-2024-39542
Mitre link : CVE-2024-39542
JSON object : View
Products Affected
juniper
- junos_os_evolved
- junos
CWE
No CWE.