Product Affected

This issue can affect any product or platform running Junos OS with J-Web enabled.
High
9.8 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Problem

An information leak vulnerability in J-Web may allow unauthenticated remote users with network access to the J-Web service to gain administrative privileges or perform certain administrative actions on the device.

This issue was discovered by an external security researcher.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

No other Juniper Networks products or platforms are affected by this issue.

This issue has been assigned ​​CVE-2016-1279 .

Solution

The following software releases have been updated to resolve this specific issue: Junos OS 12.1X46-D45, 12.1X46-D46, 12.1X46-D51, 12.1X47-D35, 12.3R12, 12.3X48-D25, 13.3R10, 13.3R9-S1, 14.1R7, 14.1X53-D35, 14.2R6, 15.1A2, 15.1F4, 15.1X49-D30, 15.1R3 and all subsequent releases.

Note: 12.1X46-D50 does not have this fix!

This issue is being tracked as PR 1114274 and is visible on the Customer Support website.

How to obtain fixed software:
Security vulnerabilities in Junos are fixed in the next available Maintenance Release of each supported Junos version. In some cases, a Maintenance Release is not planned to be available in an appropriate time-frame. For these cases, Service Releases are made available in order to be more timely. Security Advisory and Security Notices will indicate which Maintenance and Service Releases contain fixes for the issues described. Upon request to JTAC , customers will be provided download instructions for a Service Release. Although Juniper does not provide formal Release Note documentation for a Service Release, a list of "PRs fixed" can be provided on request.


Workaround

Disable J-Web, or limit access to only trusted hosts.

Severity Assessment

Information for how Juniper Networks uses CVSS can be found at KB 16446 [juniper.net] "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Modification History

Modification History:

2016-07-13: Initial publication
2017-03-05: Category restructure.

Related Information

Acknowledgements

Juniper SIRT would like to acknowledge and thank Kyle Lovett and Dor Tumarkin for responsibly reporting this vulnerability.