CVE-2022-22156: Junos OS: Certificate validation is skipped when fetching system scripts from a HTTPS URL
An Improper Certificate Validation weakness in the Juniper Networks Junos OS allows an attacker 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 prior to 18.4R2-S9, 18.4R3-S9; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S7; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2; 21.1 versions prior to 21.1R1-S1, 21.1R2.
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Frequently Asked Questions
What is the severity of CVE-2022-22156?
CVE-2022-22156 is rated as a high severity vulnerability that allows for potential Person-in-the-Middle (PitM) attacks.
How do I fix CVE-2022-22156?
To fix CVE-2022-22156, update your Junos OS to a version that has patched the vulnerability.
Which versions of Junos OS are affected by CVE-2022-22156?
CVE-2022-22156 affects Junos OS versions up to and including 18.3 and specific 18.4, 19.x, and 20.x versions.
What type of attacks can be executed due to CVE-2022-22156?
CVE-2022-22156 can lead to Person-in-the-Middle (PitM) attacks compromising data integrity and confidentiality.
Is CVE-2022-22156 exploitable without authentication?
Yes, CVE-2022-22156 can be exploited remotely without authentication, making it particularly dangerous.