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AUSCERT External Security Bulletin Redistribution
ESB-2024.2212
2024-04 Security Bulletin: Junos OS and Junos OS Evolved: A low-privileged
user can access confidential information (CVE-2024-21615)
11 April 2024
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AusCERT Security Bulletin Summary
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Product: Junos OS
Junos OS Evolved
Publisher: Juniper Networks
Operating System: Juniper
Resolution: Patch/Upgrade
CVE Names: CVE-2024-21615
Original Bulletin:
https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-A-low-privileged-user-can-access-confidential-information-CVE-2024-21615
Comment: CVSS (Max): 5.0 CVE-2024-21615 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N)
CVSS Source: Juniper Networks
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
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Article ID: JSA75756
Product Affected: This issue affects all versions of Junos OS earlier than
21.2R3-S7, 21.4, 22.1, 22.2, 22.3, 22.4, 23.2. This issue affects all versions
of Junos OS Evolved earlier than 21.2R3-S7-EVO, 21.3-EVO, 21.4-EVO, 22.1-EVO,
22.2-EVO, 22.3-EVO, 22.4-EVO, 23.2-EVO.
Severity Level: Medium
CVSS Score: CVSS 3.1
Problem:
An Incorrect Default Permissions vulnerability in Juniper Networks Junos OS and
Junos OS Evolved allows a local, low-privileged attacker to access confidential
information on the system.
On all Junos OS and Junos OS Evolved platforms, when NETCONF traceoptions are
configured, and a super-user performs specific actions via NETCONF, then a
low-privileged user can access sensitive information compromising the
confidentiality of the system.
This issue affects:
Junos OS
o all versions before 21.2R3-S7,
o from 21.4 before 21.4R3-S5,
o from 22.1 before 22.1R3-S5,
o from 22.2 before 22.2R3-S3,
o from 22.3 before 22.3R3-S2,
o from 22.4 before 22.4R3,
o from 23.2 before 23.2R1-S2.
Junos OS Evolved
o all versions before 21.2R3-S7-EVO,
o from 21.3 before 21.3R3-S5-EVO,
o from 21.4 before 21.4R3-S5-EVO,
o from 22.1 before 22.1R3-S5-EVO,
o from 22.2 before 22.2R3-S3-EVO,
o from 22.3 before 22.3R3-S2-EVO,
o from 22.4 before 22.4R3-EVO,
o from 23.2 before 23.2R1-S2.
In order for this issue to occur, netconf traceoptions needs to be enabled
using the following configuration.
[system services netconf traceoptions]
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was discovered during production use.
This issue has been assigned CVE-2024-21615 .
Solution:
The following software releases have been updated to resolve this specific
issue:
Junos OS: 21.2R3-S7, 21.4R3-S5, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3,
23.2R1-S2, 23.4R1 and all subsequent releases.
Junos OS Evolved: 21.2R3-S7-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S5-EVO,
22.2R3-S3-EVO, 22.3R3-S2-EVO, 22.4R3-EVO, 23.2R1-S2-EVO, 23.4R1-EVO and all
subsequent releases.
This issue is being tracked as 1702241 which is visible on the Customer Support
website.
Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of
Engineering (EOE) or End of Life (EOL).
Workaround:
There are no available workarounds for this issue.
But to reduce the risk of exploitation, enable access control lists (ACLs) and
other filtering mechanisms to limit access to the device only from trusted
hosts and networks to the NETCONF service.
Modification History:
2024-04-10: Initial Publication
Related Information:
o KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin
Publication Process
o KB16765: In which releases are vulnerabilities fixed?
o KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories
o Report a Security Vulnerability - How to Contact the Juniper Networks
Security Incident Response Team
o https://www.cve.org/CVERecord?id=CVE-2024-21615
Last Updated: 2024-04-10
Created: 2024-04-10
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