CVE-2021-31372: Junos OS: J-Web allows a locally authenticated attacker to escalate their privileges to root.
An Improper Input Validation vulnerability in J-Web of Juniper Networks Junos OS allows a locally authenticated J-Web attacker to escalate their privileges to root over the target device. This issue affects: Juniper Networks Junos OS All versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2;
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Frequently Asked Questions
What is the severity of CVE-2021-31372?
CVE-2021-31372 is classified as a critical severity vulnerability due to its potential for privilege escalation.
How do I fix CVE-2021-31372?
To fix CVE-2021-31372, upgrade Junos OS to version 18.3R3-S5 or later, or to a subsequent version.
Which versions of Junos OS are affected by CVE-2021-31372?
CVE-2021-31372 affects all versions of Junos OS prior to 18.3R3-S5 and specific 18.4 and 19.x versions.
What type of vulnerability is CVE-2021-31372?
CVE-2021-31372 is an improper input validation vulnerability allowing local attackers to escalate privileges.
Is a workaround available for CVE-2021-31372?
There is no known workaround for CVE-2021-31372; updating to a patched version is recommended.