CVE-2023-36839
Assigner: juniper
Published: 2023-10-12T22:56:24.897Z
State: PUBLISHED
affected: defaultStatus: unaffected
product: Junos OS
vendor: Juniper Networks
versions: lessThan: 20.4R3-S8
status: affected
version: 0
versionType: semver
lessThan: 21.1*
status: affected
version: 21.1R1
versionType: semver
lessThan: 21.2R3-S5
status: affected
version: 21.2
versionType: semver
lessThan: 21.3R3-S4
status: affected
version: 21.3
versionType: semver
lessThan: 21.4R3-S3
status: affected
version: 21.4
versionType: semver
lessThan: 22.1R3-S2
status: affected
version: 22.1
versionType: semver
lessThan: 22.2R3
status: affected
version: 22.2
versionType: semver
lessThan: 22.3R2-S2, 22.3R3
status: affected
version: 22.3
versionType: semver
lessThan: 22.4R2
status: affected
version: 22.4
versionType: semver
defaultStatus: unaffected
product: Junos OS Evolved
vendor: Juniper Networks
versions: lessThan: 20.4R3-S8-EVO
status: affected
version: 0
versionType: semver
lessThan: 21.1*-EVO
status: affected
version: 21.1R1-EVO
versionType: semver
lessThan: 21.2R3-S5-EVO
status: affected
version: 21.2-EVO
versionType: semver
lessThan: 21.3R3-S4-EVO
status: affected
version: 21.3-EVO
versionType: semver
lessThan: 21.4R3-S3-EVO
status: affected
version: 21.4-EVO
versionType: semver
lessThan: 22.1R3-S2-EVO
status: affected
version: 22.1-EVO
versionType: semver
lessThan: 22.2R3-EVO
status: affected
version: 22.2-EVO
versionType: semver
lessThan: 22.3R2-S2-EVO, 22.3R3-EVO
status: affected
version: 22.3-EVO
versionType: semver
lessThan: 22.4R1-S1-EVO, 22.4R2-EVO
status: affected
version: 22.4-EVO
versionType: semver
configurations: supportingMedia: base64: no
type: text/html
value: <p>This vulnerability is only exploitable on interfaces with LLDP enabled.</p><tt>[ protocols lldp interface ]</tt>
value: This vulnerability is only exploitable on interfaces with LLDP enabled.

[ protocols lldp interface ]
datePublic: 2023-10-11T16:00:00.000Z
descriptions: supportingMedia: base64: no
type: text/html
value: 

<p>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).</p><p>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.</p><p>This issue affects:</p><p>Juniper Networks Junos OS</p><p></p><ul><li>All versions prior to 20.4R3-S8;</li><li>21.1 version 21.1R1 and later versions;</li><li>21.2 versions prior to 21.2R3-S5;</li><li>21.3 versions prior to 21.3R3-S4;</li><li>21.4 versions prior to 21.4R3-S3;</li><li>22.1 versions prior to 22.1R3-S2;</li><li>22.2 versions prior to 22.2R3;</li><li>22.3 versions prior to 22.3R2-S2;</li><li>22.4 versions prior to 22.4R2;</li></ul><p></p><p>Juniper Networks Junos OS Evolved</p><p></p><ul><li>All versions prior to 20.4R3-S8-EVO;</li><li>21.1 version 21.1R1-EVO and later versions;</li><li>21.2 versions prior to 21.2R3-S5-EVO;</li><li>21.3 versions prior to 21.3R3-S4-EVO;</li><li>21.4 versions prior to 21.4R3-S3-EVO;</li><li>22.1 versions prior to 22.1R3-S2-EVO;</li><li>22.2 versions prior to 22.2R3-EVO;</li><li>22.3 versions prior to 22.3R2-S2-EVO;</li><li>22.4 versions prior to 22.4R1-S1-EVO;</li></ul><p></p>


value: 
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;







exploits: supportingMedia: base64: no
type: text/html
value: <p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>
value: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.


metrics: cvssV3_1: attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
format: CVSS
scenarios: value: GENERAL
problemTypes: descriptions: cweId: CWE-1284
description:  CWE-1284: Improper Validation of Specified Quantity in Input
type: CWE
descriptions: description: Denial of Service (DoS)
solutions: supportingMedia: base64: no
type: text/html
value: <p>The following software releases have been updated to resolve this specific issue: </p><p>Junos OS: 20.4R3-S8, 21.2R3-S5, 21.3R3-S4, 21.4R3-S3, 22.1R3-S2, 22.2R3, 22.3R2-S2, 22.3R3, 22.4R2, 23.2R1, and all subsequent releases.</p><p>Junos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S5-EVO, 21.3R3-S4-EVO, 21.4R3-S3-EVO, 22.1R3-S2-EVO, 22.2R3-EVO, 22.3R2-S2-EVO, 22.3R3-EVO, 22.4R1-S1-EVO, 22.4R2-EVO, 23.1R1-EVO, 23.1R2-EVO, 23.2R1-EVO</p>
value: The following software releases have been updated to resolve this specific issue: 

Junos OS: 20.4R3-S8, 21.2R3-S5, 21.3R3-S4, 21.4R3-S3, 22.1R3-S2, 22.2R3, 22.3R2-S2, 22.3R3, 22.4R2, 23.2R1, and all subsequent releases.

Junos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S5-EVO, 21.3R3-S4-EVO, 21.4R3-S3-EVO, 22.1R3-S2-EVO, 22.2R3-EVO, 22.3R2-S2-EVO, 22.3R3-EVO, 22.4R1-S1-EVO, 22.4R2-EVO, 23.1R1-EVO, 23.1R2-EVO, 23.2R1-EVO


source: advisory: JSA73171
defect: 1712287
discovery: USER
timeline: time: 2023-10-11T16:00:00.000Z
value: Initial Publication
title: Junos OS and Junos OS Evolved: An l2cpd crash will occur when specific LLDP packets are received
workarounds: supportingMedia: base64: no
type: text/html
value: <p>If LLDP and its services are not required, customers can disable LLDP. Disabling telemetry polling also mitigates the issue.</p><p>There are no other known workarounds for this issue.</p>
value: If LLDP and its services are not required, customers can disable LLDP. Disabling telemetry polling also mitigates the issue.

There are no other known workarounds for this issue.


x_generator: engine: Vulnogram 0.1.0-av217