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 users 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.
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Junos_os_evolved | Juniper | 20.4 (including) | 20.4 (including) |
| Junos_os_evolved | Juniper | 20.4-r1 (including) | 20.4-r1 (including) |
| Junos_os_evolved | Juniper | 20.4-r1-s1 (including) | 20.4-r1-s1 (including) |
| Junos_os_evolved | Juniper | 20.4-r1-s2 (including) | 20.4-r1-s2 (including) |
| Junos_os_evolved | Juniper | 20.4-r2 (including) | 20.4-r2 (including) |
| Junos_os_evolved | Juniper | 20.4-r2-s1 (including) | 20.4-r2-s1 (including) |
| Junos_os_evolved | Juniper | 20.4-r2-s2 (including) | 20.4-r2-s2 (including) |
| Junos_os_evolved | Juniper | 20.4-r2-s3 (including) | 20.4-r2-s3 (including) |
| Junos_os_evolved | Juniper | 20.4-r3 (including) | 20.4-r3 (including) |
| Junos_os_evolved | Juniper | 21.1 (including) | 21.1 (including) |
| Junos_os_evolved | Juniper | 21.1-r1 (including) | 21.1-r1 (including) |
| Junos_os_evolved | Juniper | 21.1-r1-s1 (including) | 21.1-r1-s1 (including) |
| Junos_os_evolved | Juniper | 21.1-r2 (including) | 21.1-r2 (including) |
| Junos_os_evolved | Juniper | 21.1-r3 (including) | 21.1-r3 (including) |
| Junos_os_evolved | Juniper | 21.1-r3-s1 (including) | 21.1-r3-s1 (including) |
| Junos_os_evolved | Juniper | 21.2 (including) | 21.2 (including) |
| Junos_os_evolved | Juniper | 21.2-r1 (including) | 21.2-r1 (including) |
| Junos_os_evolved | Juniper | 21.2-r1-s1 (including) | 21.2-r1-s1 (including) |
| Junos_os_evolved | Juniper | 21.2-r1-s2 (including) | 21.2-r1-s2 (including) |
| Junos_os_evolved | Juniper | 21.2-r2 (including) | 21.2-r2 (including) |
| Junos_os_evolved | Juniper | 21.2-r2-s1 (including) | 21.2-r2-s1 (including) |
| Junos_os_evolved | Juniper | 21.2-r2-s2 (including) | 21.2-r2-s2 (including) |
| Junos_os_evolved | Juniper | 21.3 (including) | 21.3 (including) |
| Junos_os_evolved | Juniper | 21.3-r1 (including) | 21.3-r1 (including) |
| Junos_os_evolved | Juniper | 21.3-r1-s1 (including) | 21.3-r1-s1 (including) |