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AUSCERT External Security Bulletin Redistribution
ESB-2015.2601
2015-10 Security Bulletin: Junos: J-Web in vSRX-Series: A remote attacker
can cause a denial of service to vSRX when J-Web is enabled
causing the vSRX instance to reboot. (CVE-2014-6451)
15 October 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Juniper vSRX-Series
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-6451
Original Bulletin:
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10700
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2015-10 Security Bulletin: Junos: J-Web in vSRX-Series: A remote attacker can
cause a denial of service to vSRX when J-Web is enabled causing the vSRX
instance to reboot. (CVE-2014-6451)
Categories:
Junos
SRX Series
vSRX
SIRT Advisory
Security Advisories ID: JSA10700
Last Updated: 14 Oct 2015
Version: 2.0
Product Affected:
J-Web in vSRX-Series
Problem:
A remote attacker may exploit a flaw in the J-Web service to perform a denial
of service attack against the vSRX system causing the system to spontaneously
reboot.
This issue is assigned CVE-2014-6451.
Solution:
The following software releases have been updated to resolve this specific
issue: Junos OS 15.1X49-D20 and all subsequent releases.
This issue was found during internal product security testing.
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 is being tracked as PR 1085414 and is visible on the Customer
Support website.
KB16765 - "In which releases are vulnerabilities fixed?" describes which
release vulnerabilities are fixed as per our End of Engineering and End of
Life support policies.
Workaround:
Disable J-Web services on vSRX. Use access lists or firewall filters to limit
access to the vSRX administrative ports only from trusted hosts. Restrict
access to only highly trusted administrators.
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:
2015-10-14: Initial publication
Related Links:
KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin
Publication Process
KB16765: In which releases are vulnerabilities fixed?
KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories
Report a Vulnerability - How to Contact the Juniper Networks Security
Incident Response Team
CVE-2014-6451: A remote attacker can cause a denial of service to vSRX
when J-Web is enabled causing the vSRX instance to reboot.
CVSS Score: 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Risk Level: High
Risk Assessment: Information for how Juniper Networks uses CVSS can be found
at KB16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories"
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