CVE-2021-31384CWE-1220CWE-285CWE-551CWE-862CWE-939

Junos OS: SRX Series: Under a specific device configuration an attacker can access the devices J-Web management services from any interface, regardless of security settings protecting the service

High · published October 19, 2021

CVSS v3.1
7.2
EPSS
1%
Percentile
66.9
In the wild
Unconfirmed
What it is

Due to a Missing Authorization weakness and Insufficient Granularity of Access Control in a specific device configuration, a vulnerability exists in Juniper Networks Junos OS on SRX Series whereby an attacker who attempts to access J-Web administrative interfaces can successfully do so from any device interface regardless of the web-management configuration and filter rules which may otherwise protect access to J-Web. This issue affects: Juniper Networks Junos OS SRX Series 20.4 version 20.4R1 and later versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.01161 · 66.9th percentile
Weaknesses
CWE-1220 · Insufficient Granularity of Access Control; CWE-285 · Improper Authorization; CWE-551 · Incorrect Behavior Order: Authorization Before Parsing and Canonicalization; CWE-862 · Missing Authorization; CWE-939 · Improper Authorization in Handler for Custom URL Scheme
Published
2021-10-19T18:17Z
EPSS history
Timeline
  • 19 OCT 18:17Z
    Junos OS: SRX Series: Under a specific device configuration an attacker can access the devices J-Web management services from any interface, regardless of security settings protecting the service
    cvelistv5