Vulnerability Monitor

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CVE-2016-4923

Insufficient cross site scripting protection in J-Web component in Juniper Networks Junos OS may potentially allow a remote unauthenticated user to inject web script or HTML and steal sensitive data and credentials from a J-Web session and to perform administrative actions on the Junos device. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. Affected releases are Juniper Networks Junos OS 11.4 prior to 11.4R13-S3; 12.1X44 prior to 12.1X44-D60; 12.1X46 prior to 12.1X46-D40; 12.1X47 prior to 12.1X47-D30; 12.3 prior to 12.3R11; 12.3X48 prior to 12.3X48-D20; 13.2X51 prior to 13.2X51-D39, 13.2X51-D40; 13.3 prior to 13.3R9; 14.1 prior to 14.1R6; 14.2 prior to 14.2R6; 15.1 prior to 15.1R3; 15.1X49 prior to 15.1X49-D20; 15.1X53 prior to 15.1X53-D57.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.0, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from juniper organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2017-10-13T17:29:00.330

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 8.0 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-79
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4 Yes
Operating System juniper junos 11.4r13 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3 Yes
Operating System juniper junos 12.3x48 Yes
Operating System juniper junos 12.3x48 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 13.3 Yes
Operating System juniper junos 14.1 Yes
Operating System juniper junos 14.1 Yes
Operating System juniper junos 14.1 Yes
Operating System juniper junos 14.1 Yes
Operating System juniper junos 14.1 Yes
Operating System juniper junos 14.1 Yes
Operating System juniper junos 14.2 Yes
Operating System juniper junos 14.2 Yes
Operating System juniper junos 14.2 Yes
Operating System juniper junos 14.2 Yes
Operating System juniper junos 14.2 Yes
Operating System juniper junos 15.1 Yes
Operating System juniper junos 15.1 Yes
Operating System juniper junos 15.1x49 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 15.1x53 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x44 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x46 Yes
Operating System juniper junos 12.1x47 Yes
Operating System juniper junos 12.1x47 Yes
Operating System juniper junos 12.1x47 Yes
Operating System juniper junos 12.1x47 Yes
Operating System juniper junos 12.1x47 Yes
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.