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Medium · 5.3 CVE-2021-31386 EUVD-2021-18296GHSA-5cg5-qvwp-fmh7

Junos OS: When using J-Web with HTTP an attacker may retrieve encryption keys via Person-in-the-Middle attacks.

Published Oct 19, 2021 · Updated Sep 17, 2024 · Assigned by juniper

Description

A Protection Mechanism Failure vulnerability in the J-Web HTTP service of Juniper Networks Junos OS allows a remote unauthenticated attacker to perform Person-in-the-Middle (PitM) attacks against the device. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S20; 15.1 versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2.

Affected products

VendorProductAffectedFixed
Juniper Networks Junos OS 12.3 – < 12.3R12-S20, 15.1 – < 15.1R7-S11, 18.3 – < 18.3R3-S6, 18.4 – < 18.4R3-S10, 19.1 – < 19.1R3-S7, 19.2 – < 19.2R3-S4, 19.3 – < 19.3R3-S4, 19.4 – < 19.4R3-S6, 20.1 – < 20.1R3-S2, 20.2 – < 20.2R3-S3, 20.3 – < 20.3R3-S1, 20.4 – < 20.4R3, 21.1 – < 21.1R3, 21.2 – < 21.2R2 12.3R12-S20

References