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AUSCERT External Security Bulletin Redistribution
ESB-2014.1143
Cisco IOS Software and Cisco IOS XE Software NTP Access Group Vulnerability
10 July 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOS
Cisco IOS XE
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3309
Reference: ESB-2014.1129
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3309
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Cisco Security Notice
Cisco IOS Software and Cisco IOS XE Software NTP Access Group Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3309
CVE ID: CVE-2014-3309
Release Date: 2014 July 8 20:53 UTC (GMT)
Last Updated: 2014 July 9 14:04 UTC (GMT)
Related Documents:
Summary
A vulnerability in the implementation of the ntp access-group command in Cisco
IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote
attacker to bypass the configured Network Time Protocol (NTP) access group and
query the affected NTP-configured server for the time.
The vulnerability is due to improper implementation of the ntp access-group
command in certain Cisco IOS Software and Cisco IOS XE Software versions. An
attacker could exploit this vulnerability by sending NTP query packets to an
affected NTP server configured to deny all requests. An exploit could allow
the attacker to bypass the configured NTP access group and query the affected
NTP-configured server for the time.
Affected Products
Product More Information CVSS
IOS CSCuj66318 5.0/4.1
Cisco IOS XE CSCuj66318 5.0/4.1
Software
What Is a Cisco Security Notice?
The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco
Security Notices to inform customers of low- to mid-level severity security
issues involving Cisco products.
Customers who wish to upgrade to a software version that includes fixes for
these issues should contact their normal support channels. Free software
updates will not be provided for issues that are disclosed through a Cisco
Security Notice.
For additional information about Cisco PSIRT publications, see the Cisco
Security Vulnerability Policy at
http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html
Customers Using Third-Party Support Organizations
Customers may have Cisco products that are provided or maintained through
prior or existing agreements with third-party support organizations, such as
Cisco Partners, authorized resellers, or service providers. For these
products, customers should consult their service providers or support
organizations to ensure that any applied workaround or fix is the most
appropriate in the intended network before it is deployed.
Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy, and may lack important information
or contain factual errors.
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