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AUSCERT External Security Bulletin Redistribution
ESB-2024.0216
2024-01 Security Bulletin: Junos OS Evolved: IPython
privilege escalation vulnerability (CVE-2022-21699)
11 January 2024
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AusCERT Security Bulletin Summary
---------------------------------
Product: Junos OS Evolved
Publisher: Juniper Networks
Operating System: Juniper
Resolution: Patch/Upgrade
CVE Names: CVE-2022-21699
Original Bulletin:
https://supportportal.juniper.net/s/article/2024-01-Security-Bulletin-Junos-OS-Evolved-IPython-privilege-escalation-vulnerability-CVE-2022-21699
Comment: CVSS (Max): 8.8 CVE-2022-21699 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
CVSS Source: Juniper Networks
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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Article ID: JSA75721
Product Affected: This issue affects all versions of Junos OS Evolved.
Severity Level: High
CVSS Score: 8.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
Problem:
IPython, shipped with Juniper Networks Junos OS Evolved, is subject to an
arbitrary code execution vulnerability achieved by not properly managing cross
user temporary files. This vulnerability allows one user to run code as another
on the same system.
IPython is only accessible from the Junos OS Evolved shell, and not normally
used in production.
This issue affects Juniper Networks Junos OS Evolved:
o All versions earlier than 20.4R2-EVO;
o 21.1-EVO versions earlier than 21.1R2-EVO;
o 21.3-EVO versions earlier than 21.3R2-EVO;
o 21.4-EVO versions earlier than 21.4R3-S6-EVO;
o 22.1-EVO versions earlier than 22.1R3-S5-EVO;
o 22.2-EVO versions earlier than 22.2R3-S3-EVO;
o 23.2-EVO versions earlier than 23.2R2-EVO.
This issue does not affect Juniper Networks Junos OS Evolved:
o 21.2-EVO;
o 22.3-EVO;
o 22.4-EVO.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was discovered during external security research.
This issue has been assigned CVE-2022-21699 .
Solution:
The following software releases have been updated to resolve this specific
issue: 20.4R2-EVO, 21.1R2-EVO, 21.3R2-EVO, 21.4R3-S6-EVO, 22.1R3-S5-EVO,
22.2R3-S3-EVO, 22.3R1-EVO, 22.4R1-EVO, 23.2R2-EVO, 23.4R1-EVO, and all
subsequent releases.
This issue is being tracked as PR 1745190 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:
Avoid using ' ipython ' from the Junos shell.
Modification History:
2024-01-10: 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 CVE-2022-21699 at cve.mitre.org
Last Updated: 2024-01-10
Created: 2024-01-10
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