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CVE
PUBLISHED

CVE-2024-39530

Junos OS: Attempting to access specific sensors on platforms not supporting these will lead to a chassisd crash

Assignerjuniper
Reserved2024-06-25
Published2024-07-11
Updated2024-07-12

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis management daemon (chassisd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If an attempt is made to access specific sensors on platforms not supporting these sensors, either via GRPC or netconf, chassisd will crash and restart leading to a restart of all FPCs and thereby a complete outage. This issue affects Junos OS: * 21.4 versions from 21.4R3 before 21.4R3-S5, * 22.1 versions from 22.1R3 before 22.1R3-S4, * 22.2 versions from 22.2R2 before 22.2R3, * 22.3 versions from 22.3R1 before 22.3R2-S2, 22.3R3, * 22.4 versions from 22.4R1 before 22.4R2. This issue does not affect Junos OS versions earlier than 21.4.



HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

Problem types

CWE-754 Improper Check for Unusual or Exceptional Conditions

Product status

Default status
unaffected

21.4R3 before 21.4R3-S5
affected

22.1R3 before 22.1R3-S4
affected

22.2R2 before 22.2R3
affected

22.3R1 before 22.3R2-S2, 22.3R3
affected

22.4R1 before 22.4R2
affected

Any version before 21.4
unaffected

References

https://supportportal.juniper.net/JSA82989 vendor-advisory

cve.org CVE-2024-39530

nvd.nist.gov CVE-2024-39530

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