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Juniper Junos OS: 2024-01 Security Bulletin: Junos OS: SRX Series: Due to an error in processing TCP events flowd will crash (JSA75742) (CVE-2024-21601)

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Juniper Junos OS: 2024-01 Security Bulletin: Junos OS: SRX Series: Due to an error in processing TCP events flowd will crash (JSA75742) (CVE-2024-21601)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
01/10/2024
Created
01/12/2024
Added
01/11/2024
Modified
01/30/2025

Description

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.

Solution(s)

  • juniper-junos-os-upgrade-latest

References

  • https://attackerkb.com/topics/cve-2024-21601
  • CVE - 2024-21601
  • JSA75742
  • 查看数 704
  • 已创建
  • 最后回复

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