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THREATINT
PUBLISHED

CVE-2025-21596

Junos OS: SRX1500,SRX4100,SRX4200: Execution of low-privileged CLI command results in chassisd crash



Description

An Improper Handling of Exceptional Conditions vulnerability in the command-line processing of Juniper Networks Junos OS on SRX1500, SRX4100, and SRX4200 devices allows a local, low-privileged authenticated attacker executing the 'show chassis environment pem' command to cause the chassis daemon (chassisd) to crash and restart, resulting in a temporary Denial of Service (DoS). However, repeated execution of this command will eventually cause the chassisd process to fail to restart, impacting packet processing on the system. This issue affects Junos OS on SRX1500, SRX4100, SRX4200:  * All versions before 21.4R3-S9,  * from 22.2 before 22.2R3-S5,  * from 22.3 before 22.3R3-S4,  * from 22.4 before 22.4R3-S4,  * from 23.2 before 23.2R2-S3,  * from 23.4 before 23.4R2-S1.

Reserved 2024-12-26 | Published 2025-01-09 | Updated 2025-01-09 | Assigner juniper


MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

MEDIUM: 6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:N/R:U/RE:M

Problem types

CWE-755 Improper Handling of Exceptional Conditions

Product status

Default status
unaffected

Any version before 21.4R3-S9
affected

22.2 before 22.2R3-S5
affected

22.3 before 22.3R3-S4
affected

22.4 before 22.4R3-S4
affected

23.2 before 23.2R2-S3
affected

23.4 before 23.4R2-S1
affected

References

supportportal.juniper.net/JSA92864 vendor-advisory

cve.org (CVE-2025-21596)

nvd.nist.gov (CVE-2025-21596)

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