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AUSCERT External Security Bulletin Redistribution
ESB-2014.0040
Junos: SRX flowd crash while processing HTTP traffic when
acting as UAC enforcer
13 January 2014
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Junos SRX Series
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0618
Original Bulletin:
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10611
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2014-01 Security Bulletin: Junos: SRX flowd crash while processing HTTP
traffic when acting as UAC enforcer (CVE-2014-0618)
Categories:
Junos
SRX Series
SIRT Advisory
Security Advisories ID: JSA10611
Last Updated: 08 Jan 2014
Version: 1.0
Product Affected:
SRX Series services gateways running Junos OS 10.4, 11.4, 12.1, or 12.1X44.
Problem:
On SRX Series services gateways acting as UAC enforcer with captive portal
enabled, certain valid HTTP protocol messages may cause the flowd (flow
daemon) process to crash. Repeated crashes of the flowd process represents a
sustained denial of service condition for SRX Series devices.
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-2014-0618.
Solution:
The following software releases have been updated to resolve this specific
issue:
All Junos OS software releases built on or after 2013-12-12, or Junos OS
10.4R16, 11.4R8, 12.1R7, 12.1X44-D20, 12.1X45-D10, and all subsequent releases
(i.e. all releases built after 12.1X45-D10).
Customers can confirm the build date of any Junos OS release by issuing the
command 'show version detail'.
This issue is being tracked as PR 846240 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:
No known workaround exists for this issue.
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.
Related Links:
KB16613: Overview of the Juniper Networks SIRT Monthly 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-2014-0618: SRX flowd crash while processing HTTP traffic when acting
as UAC enforcer
CVSS Score:
7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Risk Level:
High
Risk Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446
"Common Vulnerability Scoring System (CVSS) and Juniper's Security
Advisories."
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