Riskcovery

CVE-2024-21594

Junos OS: SRX 5000 Series: Repeated execution of a specific CLI command causes a flowd crash

State
Published
Severity
5.5 Medium
Published
Jan 12, 2024
Updated
Jun 3, 2025
Reserved
Dec 27, 2023

Read the record on cve.org

Description

A Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS).

On an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash.

The NSD process has to be restarted to restore services.

If this issue occurs, it can be checked with the following command:

user@host> request security policies check The following log message can also be observed:

Error: policies are out of sync for PFE node<number>.fpc<number>.pic<number>. This issue affects:

Juniper Networks Junos OS on SRX 5000 Series

* All versions earlier than 20.4R3-S6; * 21.1 versions earlier than 21.1R3-S5; * 21.2 versions earlier than 21.2R3-S4; * 21.3 versions earlier than 21.3R3-S3; * 21.4 versions earlier than 21.4R3-S3; * 22.1 versions earlier than 22.1R3-S1; * 22.2 versions earlier than 22.2R3; * 22.3 versions earlier than 22.3R2.

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 20.4R3-S6Affected
  • 21.1 to before 21.1R3-S5Affected
  • 21.2 to before 21.2R3-S4Affected
  • 21.3 to before 21.3R3-S3Affected
  • 21.4 to before 21.4R3-S3Affected
  • 22.1 to before 22.1R3-S1Affected
  • 22.2 to before 22.2R3Affected
  • 22.3 to before 22.3R2Affected

References

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