CVE-2021-31386CWE-300CWE-311CWE-325CWE-693

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

Medium · published October 19, 2021

CVSS v3.1
5.3
EPSS
1%
Percentile
53.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00713 · 53.1th percentile
Weaknesses
CWE-300 · Channel Accessible by Non-Endpoint; CWE-311 · Missing Encryption of Sensitive Data; CWE-325 · Missing Cryptographic Step; CWE-693 · Protection Mechanism Failure
Published
2021-10-19T18:17Z
EPSS history
Timeline
  • 19 OCT 18:17Z
    Junos OS: When using J-Web with HTTP an attacker may retrieve encryption keys via Person-in-the-Middle attacks.
    cvelistv5