An Improper Certificate Validation weakness in the Juniper Networks Junos OS allows an malicious user to perform Person-in-the-Middle (PitM) attacks when a system script is fetched from a remote source at a specified HTTPS URL, which may compromise the integrity and confidentiality of the device. The following command can be executed by an administrator via the CLI to refresh a script from a remote location, which is affected from this vulnerability: >request system scripts refresh-from (commit | event | extension-service | op | snmp) file filename url <https-url> This issue affects: Juniper Networks Junos OS All versions before 18.4R2-S9, 18.4R3-S9; 19.1 versions before 19.1R2-S3, 19.1R3-S7; 19.2 versions before 19.2R1-S7, 19.2R3-S3; 19.3 versions before 19.3R3-S4; 19.4 versions before 19.4R3-S7; 20.1 versions before 20.1R2-S2, 20.1R3; 20.2 versions before 20.2R3; 20.3 versions before 20.3R2-S1, 20.3R3; 20.4 versions before 20.4R2; 21.1 versions before 21.1R1-S1, 21.1R2.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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juniper junos |
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juniper junos 18.4 |
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juniper junos 19.1 |
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juniper junos 19.2 |
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juniper junos 19.3 |
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juniper junos 19.4 |
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juniper junos 20.1 |
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juniper junos 20.2 |
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juniper junos 20.3 |
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juniper junos 20.4 |
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juniper junos 21.1 |
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