Product Affected

This issue can affect all SRX Series services gateways
High
7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)

Problem

An issue has been found on SRX Series services gateways when Enhanced Web Filtering (EWF) is enabled. A certain type of URL can cause the flow daemon (flowd) process to crash and restart. Repeated crashes of the flowd process can represent 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-2014-2714 .

Solution

The following software releases have been updated to resolve this specific issue:

  • All Junos OS software releases built on or after 2013-12-17, or
  • Junos OS 10.4R15, 11.4R9, 12.1R7, 12.1X44-D20, 12.1X45-D10, 12.1X46-D10, and all subsequent releases (i.e. all releases built after 12.1X46-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 877830 and is visible on the Customer Support website.

KB16765 [juniper.net] - "In which releases are vulnerabilities fixed?" describes which release vulnerabilities are fixed as per our End of Engineering and End of Life support policies.
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 the use of Enhanced Web Filtering if it is not needed.

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."

Related Information

Acknowledgements