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CVE

CVE-2021-31384

Due to a Missing Authorization weakness and Insufficient Granularity of Access Control in a specific device configuratio

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.

HIGH · CVSS 7.2 EPSS 0.00365
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1220Insufficient Granularity of Access Control
CWE-285Improper Authorization
CWE-551Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
CWE-862Missing Authorization
CWE-862Missing Authorization
CWE-939Improper Authorization in Handler for Custom URL Scheme
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Affected Products & Versions

1
juniper junosall versions
▣

Scoring & Timeline

7.2
HIGH · CVSS v3.1 · sirt@juniper.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Oct 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://kb.juniper.net/Permissions Required
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11252Vendor Advisory
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