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2014-04 Security Bulletin: Junos: Branch SRX Series vulnerable to denial of service for new Dynamic VPN connections (CVE-2014-0612)

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Categories:
Security Advisories ID: JSA10620
Last Updated: 09 Apr 2014
Version: 2.0

Product Affected:
This issue can affect all SRX Branch Series services gateways: SRX 100, SRX 110, SRX 210, SRX 220, SRX 240, SRX 550, and SRX 650.

Problem:
On Branch SRX Series service gateways, when Dynamic IPsec VPN is configured, a remote unauthenticated user may cause a denial of service condition where new Dynamic VPN connections may fail for other users. This issue may also lead to high CPU consumption and disk usage which may cause other complications.

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-2014-0612.

Solution:
The following software releases have been updated to resolve this specific issue:
  • All Junos OS software releases built on or after 2014-02-19, or
  • Junos OS 11.4R10-S1, 11.4R11, 12.1X44-D26, 12.1X44-D30, 12.1X45-D20, 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 934366 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:
Other than disabling Dynamic IPsec VPN, no viable workaround is known to exist 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:

CVSS Score:
5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Risk Level:
Medium

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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