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AUSCERT External Security Bulletin Redistribution
ESB-2015.0945
sol16393: NTP vulnerability CVE-2014-9298 Security Advisory
13 April 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2014-9298
Reference: ESB-2015.0917
ESB-2015.0715
ESB-2015.0288.2
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/16000/300/sol16393.html
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sol16393: NTP vulnerability CVE-2014-9298 Security Advisory
Security Advisory
Original Publication Date: 04/09/2015
Description
Some kernels do not offer protection for ::1 source addresses on IPv6
interfaces. Since NTP's access control mechanism is based on source address
and localhost addresses generally have no restrictions, an attacker may
be able to send malicious control and configuration packets by spoofing
::1 addresses from the outside. (CVE-2014-9298)
Impact
This vulnerability may allow an attacker to bypass NTP access control
mechanisms that rely on IPv6 source address filtering.
Status
F5 Product Development has assigned ID 506034 (BIG-IP), 511253 (BIG-IQ),
and 511254 (Enterprise Manager) to this vulnerability, and has evaluated
the currently supported releases for potential vulnerability.
To determine if your release is known to be vulnerable, the components
or features that are affected by the vulnerability, and for information
about releases or hotfixes that address the vulnerability, refer to the
following table:
Product Versions known to be vulnerable Versions known to be not vulnerable Severity Vulnerable component or feature
BIG-IP LTM 11.0.0 - 11.6.0 None High NTP daemon of Linux subsystem
10.1.0 - 10.2.4
BIG-IP AAM 11.4.0 - 11.6.0 None High NTP daemon of Linux subsystem
BIG-IP AFM 11.3.0 - 11.6.0 None High NTP daemon of Linux subsystem
BIG-IP 11.0.0 - 11.6.0 None High NTP daemon of Linux subsystem
Analytics
BIG-IP APM 11.0.0 - 11.6.0 None High NTP daemon of Linux subsystem
10.1.0 - 10.2.4
BIG-IP ASM 11.0.0 - 11.6.0 None High NTP daemon of Linux subsystem
10.1.0 - 10.2.4
BIG-IP Edge 11.0.0 - 11.3.0 None High NTP daemon of Linux subsystem
Gateway 10.1.0 - 10.2.4
BIG-IP GTM 11.0.0 - 11.6.0 None High NTP daemon of Linux subsystem
10.1.0 - 10.2.4
BIG-IP Link 11.0.0 - 11.6.0 None High NTP daemon of Linux subsystem
Controller 10.0.0 - 10.2.4
BIG-IP PEM 11.3.0 - 11.6.0 None High NTP daemon of Linux subsystem
BIG-IP PSM 11.0.0 - 11.4.1 None High NTP daemon of Linux subsystem
10.1.0 - 10.2.4
BIG-IP 11.0.0 - 11.3.0 None High NTP daemon of Linux subsystem
WebAccelerator 10.1.0 - 10.2.4
BIG-IP WOM 11.0.0 - 11.3.0 None High NTP daemon of Linux subsystem
10.1.0 - 10.2.4
ARX None 6.0.0 - 6.4.0 Not vulnerable None
Enterprise 3.0.0 - 3.1.1 None High NTP daemon of Linux subsystem
Manager 2.1.0 - 2.3.0
FirePass None 7.0.0 Not vulnerable None
6.0.0 - 6.1.0
BIG-IQ Cloud 4.0.0 - 4.5.0 None High NTP daemon of Linux subsystem
BIG-IQ Device 4.2.0 - 4.5.0 None High NTP daemon of Linux subsystem
BIG-IQ Security 4.0.0 - 4.5.0 None High NTP daemon of Linux subsystem
BIG-IQ ADC 4.5.0 None High NTP daemon of Linux subsystem
LineRate None 2.2.0 - 2.5.0 Not vulnerable None
F5 WebSafe None 1.0.0 Not vulnerable None
Traffix SDC 4.0.0 - 4.1.0 None High NTP daemon of Linux subsystem
3.3.2 - 3.5.1
Note: As of February 17, 2015, AskF5 Security Advisory articles include
the Severity value. Security Advisory articles published before this date
do not list a Severity value.
Recommended Action
If the previous table lists a version in the Versions known to be not
vulnerable column, you can eliminate this vulnerability by upgrading to
the listed version. If the listed version is older than the version you
are currently running, or if the table does not list any version in the
column, then no upgrade candidate currently exists.
F5 responds to vulnerabilities in accordance with the Severity values
published in the previous table. The Severity values and other security
vulnerability parameters are defined in SOL4602: Overview of the F5 security
vulnerability response policy.
To mitigate this vulnerability for the BIG-IP or BIG-IQ systems, you may
perform one or more of the following tasks:
Make sure you expose the management interface only on trusted networks.
Configure the external firewall device to block all packets with the
source of ::1. Blocking IPv6 on an external device is also a mitigation.
Modify the NTP configuration to prevent remote modifications to the
configuration. To do so run the following tmsh commands:
tmsh modify sys ntp restrict replace-all-with { "::1" { address
::1 no-modify enabled no-trap enabled } }
tmsh save /sys config
Supplemental Information
SOL9970: Subscribing to email notifications regarding F5 products
SOL9957: Creating a custom RSS feed to view new and updated documents
SOL4918: Overview of the F5 critical issue hotfix policy
SOL167: Downloading software and firmware from F5
SOL13123: Managing BIG-IP product hotfixes (11.x)
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