An Improper Validation of Specified Quantity in Input vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker who sends specific LLDP packets to cause a Denial of Service(DoS).
This issue occurs when specific LLDP packets are received and telemetry polling is being done on the device. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected.
This issue affects:
Juniper Networks Junos OS
* All versions prior to 20.4R3-S8;
* 21.1 version 21.1R1 and later versions;
* 21.2 versions prior to 21.2R3-S5;
* 21.3 versions prior to 21.3R3-S4;
* 21.4 versions prior to 21.4R3-S3;
* 22.1 versions prior to 22.1R3-S2;
* 22.2 versions prior to 22.2R3;
* 22.3 versions prior to 22.3R2-S2;
* 22.4 versions prior to 22.4R2;
Juniper Networks Junos OS Evolved
* All versions prior to 20.4R3-S8-EVO;
* 21.1 version 21.1R1-EVO and later versions;
* 21.2 versions prior to 21.2R3-S5-EVO;
* 21.3 versions prior to 21.3R3-S4-EVO;
* 21.4 versions prior to 21.4R3-S3-EVO;
* 22.1 versions prior to 22.1R3-S2-EVO;
* 22.2 versions prior to 22.2R3-EVO;
* 22.3 versions prior to 22.3R2-S2-EVO;
* 22.4 versions prior to 22.4R1-S1-EVO;
Metrics
No CVSS v4.0
Attack Vector Adjacent Network
Attack Complexity Low
Privileges Required None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploitation none
Automatable no
Technical Impact partial
Affected Vendors & Products
Vendors | Products |
---|---|
Juniper |
|
Configuration 1 [-]
|
Configuration 2 [-]
|
No data.
References
Link | Providers |
---|---|
https://supportportal.juniper.net/JSA73171 |
History
Wed, 18 Sep 2024 18:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Metrics |
ssvc
|
MITRE
Status: PUBLISHED
Assigner: juniper
Published: 2023-10-12T22:56:24.897Z
Updated: 2024-09-18T18:03:21.702Z
Reserved: 2023-06-27T16:17:25.276Z
Link: CVE-2023-36839
Vulnrichment
Updated: 2024-08-02T17:01:09.708Z
NVD
Status : Modified
Published: 2023-10-12T23:15:10.883
Modified: 2024-11-21T08:10:43.067
Link: CVE-2023-36839
Redhat
No data.