5.9

CVE-2024-21601

Junos OS: SRX Series: Due to an error in processing TCP events flowd will crash

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Juniper ≫ Junos Version 21.2 Update -
Juniper ≫ Junos Version 21.2 Update r1
Juniper ≫ Junos Version 21.2 Update r1-s1
Juniper ≫ Junos Version 21.2 Update r1-s2
Juniper ≫ Junos Version 21.2 Update r2
Juniper ≫ Junos Version 21.2 Update r2-s1
Juniper ≫ Junos Version 21.2 Update r2-s2
Juniper ≫ Junos Version 21.2 Update r3
Juniper ≫ Junos Version 21.2 Update r3-s1
Juniper ≫ Junos Version 21.2 Update r3-s2
Juniper ≫ Junos Version 21.2 Update r3-s3
Juniper ≫ Junos Version 21.2 Update r3-s4
Juniper ≫ Junos Version 21.3 Update -
Juniper ≫ Junos Version 21.3 Update r1
Juniper ≫ Junos Version 21.3 Update r1-s1
Juniper ≫ Junos Version 21.3 Update r1-s2
Juniper ≫ Junos Version 21.3 Update r2
Juniper ≫ Junos Version 21.3 Update r2-s1
Juniper ≫ Junos Version 21.3 Update r2-s2
Juniper ≫ Junos Version 21.3 Update r3
Juniper ≫ Junos Version 21.3 Update r3-s1
Juniper ≫ Junos Version 21.3 Update r3-s2
Juniper ≫ Junos Version 21.3 Update r3-s3
Juniper ≫ Junos Version 21.3 Update r3-s4
Juniper ≫ Junos Version 21.4 Update -
Juniper ≫ Junos Version 21.4 Update r1
Juniper ≫ Junos Version 21.4 Update r1-s1
Juniper ≫ Junos Version 21.4 Update r1-s2
Juniper ≫ Junos Version 21.4 Update r2
Juniper ≫ Junos Version 21.4 Update r2-s1
Juniper ≫ Junos Version 21.4 Update r2-s2
Juniper ≫ Junos Version 21.4 Update r3
Juniper ≫ Junos Version 21.4 Update r3-s1
Juniper ≫ Junos Version 21.4 Update r3-s2
Juniper ≫ Junos Version 21.4 Update r3-s3
Juniper ≫ Junos Version 22.1 Update -
Juniper ≫ Junos Version 22.1 Update r1
Juniper ≫ Junos Version 22.1 Update r1-s1
Juniper ≫ Junos Version 22.1 Update r1-s2
Juniper ≫ Junos Version 22.1 Update r2
Juniper ≫ Junos Version 22.1 Update r2-s1
Juniper ≫ Junos Version 22.1 Update r2-s2
Juniper ≫ Junos Version 22.1 Update r3
Juniper ≫ Junos Version 22.1 Update r3-s1
Juniper ≫ Junos Version 22.1 Update r3-s2
Juniper ≫ Junos Version 22.2 Update -
Juniper ≫ Junos Version 22.2 Update r1
Juniper ≫ Junos Version 22.2 Update r1-s1
Juniper ≫ Junos Version 22.2 Update r1-s2
Juniper ≫ Junos Version 22.2 Update r2
Juniper ≫ Junos Version 22.2 Update r2-s1
Juniper ≫ Junos Version 22.2 Update r2-s2
Juniper ≫ Junos Version 22.2 Update r3
Juniper ≫ Junos Version 22.3 Update -
Juniper ≫ Junos Version 22.3 Update r1
Juniper ≫ Junos Version 22.3 Update r1-s1
Juniper ≫ Junos Version 22.3 Update r1-s2
Juniper ≫ Junos Version 22.3 Update r2
Juniper ≫ Junos Version 22.3 Update r2-s1
Juniper ≫ Junos Version 22.4 Update -
Juniper ≫ Junos Version 22.4 Update r1
Juniper ≫ Junos Version 22.4 Update r1-s1
Juniper ≫ Junos Version 22.4 Update r1-s2
Juniper ≫ Junos Version 22.4 Update r2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.45% 0.36
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Juniper 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
Third Party Advisory
https://supportportal.juniper.net/JSA75742
Vendor Advisory