CVE-2022-22248: Junos OS Evolved: Incorrect file permissions can allow low-privileged user to cause another user to execute arbitrary commands
First published: Wed Oct 12 2022(Updated: )
An Incorrect Permission Assignment vulnerability in shell processing of Juniper Networks Junos OS Evolved allows a low-privileged local user to modify the contents of a configuration file which could cause another user to execute arbitrary commands within the context of the follow-on user's session. If the follow-on user is a high-privileged administrator, the attacker could leverage this vulnerability to take complete control of the target system. While this issue is triggered by a user, other than the attacker, accessing the Junos shell, an attacker simply requires Junos CLI access to exploit this vulnerability. This issue affects Juniper Networks Junos OS Evolved: 20.4-EVO versions prior to 20.4R3-S1-EVO; All versions of 21.1-EVO; 21.2-EVO versions prior to 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.2R1-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos Os Evolved | =20.4 | |
| Juniper Junos Os Evolved | =20.4-r1 | |
| Juniper Junos Os Evolved | =20.4-r1-s1 | |
| Juniper Junos Os Evolved | =20.4-r1-s2 | |
| Juniper Junos Os Evolved | =20.4-r2 | |
| Juniper Junos Os Evolved | =20.4-r2-s1 | |
| Juniper Junos Os Evolved | =20.4-r2-s2 | |
| Juniper Junos Os Evolved | =20.4-r2-s3 | |
| Juniper Junos Os Evolved | =20.4-r3 | |
| Juniper Junos Os Evolved | =21.1 | |
| Juniper Junos Os Evolved | =21.1-r1 | |
| Juniper Junos Os Evolved | =21.1-r1-s1 | |
| Juniper Junos Os Evolved | =21.1-r2 | |
| Juniper Junos Os Evolved | =21.1-r3 | |
| Juniper Junos Os Evolved | =21.1-r3-s1 | |
| Juniper Junos Os Evolved | =21.2 | |
| Juniper Junos Os Evolved | =21.2-r1 | |
| Juniper Junos Os Evolved | =21.2-r1-s1 | |
| Juniper Junos Os Evolved | =21.2-r1-s2 | |
| Juniper Junos Os Evolved | =21.2-r2 | |
| Juniper Junos Os Evolved | =21.2-r2-s1 | |
| Juniper Junos Os Evolved | =21.2-r2-s2 | |
| Juniper Junos Os Evolved | =21.3 | |
| Juniper Junos Os Evolved | =21.3-r1 | |
| Juniper Junos Os Evolved | =21.3-r1-s1 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.4R3-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is CVE-2022-22248?
CVE-2022-22248 is an Incorrect Permission Assignment vulnerability in shell processing of Juniper Networks Junos OS Evolved.
How does CVE-2022-22248 affect Juniper Junos OS Evolved?
CVE-2022-22248 allows a low-privileged local user to modify the contents of a configuration file which could cause another user to execute arbitrary commands within the context of the follow-on user's session.
What is the severity level of CVE-2022-22248?
The severity level of CVE-2022-22248 is high (7.3).
How can I fix CVE-2022-22248?
To fix CVE-2022-22248, it is recommended to apply the relevant security patch provided by Juniper Networks.
Where can I find more information about CVE-2022-22248?
You can find more information about CVE-2022-22248 on the Juniper Networks Knowledge Base at https://kb.juniper.net/JSA69905.
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