VULNERABILITY INTELLIGENCE

CVE-2021-31384

CVSS score7.2 HIGH
EPSS probability1.16%
CISA KEVNot currently listed
Published2021-10-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Description

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.

Weakness classification

  • 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
  • CWE-1220: Insufficient Granularity of Access Control

Primary references