CVE-2024-21601
Assigner: juniper
Published: 2024-01-12T00:53:54.163Z
State: PUBLISHED
affected: defaultStatus: unaffected
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions: lessThan: 21.2R3-S5
status: affected
version: 21.2
versionType: semver
lessThan: 21.3R3-S5
status: affected
version: 21.3
versionType: semver
lessThan: 21.4R3-S4
status: affected
version: 21.4
versionType: semver
lessThan: 22.1R3-S3
status: affected
version: 22.1
versionType: semver
lessThan: 22.2R3-S1
status: affected
version: 22.2
versionType: semver
lessThan: 22.3R2-S2, 22.3R3
status: affected
version: 22.3
versionType: semver
lessThan: 22.4R2-S1, 22.4R3
status: affected
version: 22.4
versionType: semver
datePublic: 2024-01-10T17:00:00.000Z
descriptions: supportingMedia: base64: no
type: text/html
value: 

<p>A Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in the Flow-processing Daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos).</p><p>On SRX Series devices when two different threads try to simultaneously process a queue which is used for TCP events flowd will crash. One of these threads can not be triggered externally, so the exploitation of this race condition is outside the attackers direct control.</p><p>Continued exploitation of this issue will lead to a sustained DoS.</p><p>This issue affects Juniper Networks Junos OS:</p><p></p><ul><li>21.2 versions earlier than 21.2R3-S5;</li><li>21.3 versions earlier than 21.3R3-S5;</li><li>21.4 versions earlier than 21.4R3-S4;</li><li>22.1 versions earlier than 22.1R3-S3;</li><li>22.2 versions earlier than 22.2R3-S1;</li><li>22.3 versions earlier than 22.3R2-S2, 22.3R3;</li><li>22.4 versions earlier than 22.4R2-S1, 22.4R3.</li></ul><p></p><p>This issue does not affect Juniper Networks Junos OS versions earlier than 21.2R1.</p>


value: 
A Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in the Flow-processing Daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos).

On SRX Series devices when two different threads try to simultaneously process a queue which is used for TCP events flowd will crash. One of these threads can not be triggered externally, so the exploitation of this race condition is outside the attackers direct control.

Continued exploitation of this issue will lead to a sustained DoS.

This issue affects Juniper Networks Junos OS:



  *  21.2 versions earlier than 21.2R3-S5;
  *  21.3 versions earlier than 21.3R3-S5;
  *  21.4 versions earlier than 21.4R3-S4;
  *  22.1 versions earlier than 22.1R3-S3;
  *  22.2 versions earlier than 22.2R3-S1;
  *  22.3 versions earlier than 22.3R2-S2, 22.3R3;
  *  22.4 versions earlier than 22.4R2-S1, 22.4R3.




This issue does not affect Juniper Networks Junos OS versions earlier than 21.2R1.




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: HIGH
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 5.9
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
format: CVSS
scenarios: value: GENERAL
problemTypes: descriptions: cweId: CWE-362
description: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
type: CWE
descriptions: description: Denial of Service
solutions: supportingMedia: base64: no
type: text/html
value: <p>The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S5, 21.3R3-S5, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2-S1, 22.4R3, 23.2R1, and all subsequent releases.</p>
value: The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S5, 21.3R3-S5, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2-S1, 22.4R3, 23.2R1, and all subsequent releases.


source: advisory: JSA75742
defect: 1728714
discovery: USER
timeline: time: 2024-01-10T17:00:00.000Z
value: Initial Publication
title: Junos OS: SRX Series: Due to an error in processing TCP events flowd will crash
workarounds: supportingMedia: base64: no
type: text/html
value: <p>There are no known workarounds for this issue.</p>
value: There are no known workarounds for this issue.


x_generator: engine: Vulnogram 0.1.0-av217