Support Support Downloads Knowledge Base Juniper Support Portal Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

2016-01 Security Bulletin: Junos: J-Web denial of service due to vulnerability in Embedthis Appweb Server (CVE-2016-1258)

0

0

Article ID: JSA10720 SECURITY_ADVISORIES Last Updated: 13 Jan 2016Version: 3.0
Product Affected:
These issues can affect any product or platform running Junos OS with J-Web enabled.
Problem:

A denial of service vulnerability in Embedthis Appweb Server while processing certain malformed HTTP requests may allow a remote unauthenticated user to crash the J-Web service.

This issue was found during internal product security testing.

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

This issue has been assigned CVE-2016-1258

Solution:

The following software releases have been updated to resolve this specific issue: Junos OS 12.1X44-D60, 12.1X46-D45 (pending release), 12.1X47-D30, 12.3R10, 12.3R11, 12.3X48-D20, 13.2X51-D20, 13.3R8, 14.1R6, 14.2R5 and all subsequent releases.

This issue is being tracked as PR 925108 and is visible on the Customer Support website.

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

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.

Modification History:
Modification History:

2016-01-13: Initial publication.

CVSS Score:
5.3 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Severity Level:
Medium
Severity Assessment:
A network based unauthenticated attacker can cause the J-Web service on a device to become unavailable.
Acknowledgements:
 

Related Links

Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search