An Improper Neutralization of Equivalent Special Elements vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on PTX Series allows a unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
When MPLS packets are meant to be sent to a flexible tunnel interface (FTI) and if the FTI tunnel is down, these will hit the reject NH, due to which the packets get sent to the CPU and cause a host path wedge condition. This will cause the FPC to hang and requires a manual restart to recover.
Please note that this issue specifically affects PTX1000, PTX3000, PTX5000 with FPC3, PTX10002-60C, and PTX10008/16 with LC110x. Other PTX Series devices and Line Cards (LC) are not affected.
The following log message can be seen when the issue occurs:
Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID <id> (URI: /fpc/<fpc>/pfe/<pfe>/cm/<cm>/Host_Loopback/<cm>/HOST_LOOPBACK_MAKE_CMERROR_ID[<id>])
This issue affects Juniper Networks Junos OS:
* All versions earlier than 20.4R3-S8;
* 21.1 versions earlier than 21.1R3-S4;
* 21.2 versions earlier than 21.2R3-S6;
* 21.3 versions earlier than 21.3R3-S3;
* 21.4 versions earlier than 21.4R3-S5;
* 22.1 versions earlier than 22.1R2-S2, 22.1R3;
* 22.2 versions earlier than 22.2R2-S1, 22.2R3.
References
| Link | Resource |
|---|---|
| https://supportportal.juniper.net/JSA75741 | Vendor Advisory |
| https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
Configuration 3 (hide)
|
Configuration 4 (hide)
|
Configuration 5 (hide)
|
Configuration 6 (hide)
|
Configuration 7 (hide)
|
History
19 Jan 2024, 22:57
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-01-12 01:15
Updated : 2024-02-05 00:22
NVD link : CVE-2024-21600
Mitre link : CVE-2024-21600
CVE.ORG link : CVE-2024-21600
JSON object : View
Products Affected
juniper
- junos
CWE