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AUSCERT External Security Bulletin Redistribution
ESB-2014.2152
Cisco Aironet EAP Debugging Denial of Service Vulnerability and Cisco
Aironet DHCP Denial of Service Vulnerabilty
17 November 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Aironet
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-7998 CVE-2014-7997
Original Bulletin:
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7997
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7998
Comment: This bulletin contains two (2) Cisco Systems security advisories.
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Cisco Security Notice
Cisco Aironet DHCP Denial of Service Vulnerabilty
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7997
CVE ID: CVE-2014-7997
Release Date: 2014 November 14 20:22 UTC (GMT)
Last Updated: 2014 November 14 20:22 UTC (GMT)
Summary
A vulnerability in the DHCP subsystem of Cisco Aironet Access Points could
allow an unauthenticated, adjacent attacker to create a denial of service
condition.
The vulnerability is due to an error condition that may occur when very short
DHCP leases are in use. If an attacker can prevent the access point from
renewing its lease, the device may restart after unsuccessful DHCP Renew
attempts in an effort to reestablish network connectivity. The expected
behavior is that the network interface would restart and not the device.
This vulnerability was reported to Cisco by Maxim Salomon and Timo Warns of
Airbus Operations GmbH.
Affected Products
Product More Information CVSS
IOS CSCtn16281 4.6/3.8
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.
- ------------------------------------------------------------------
Cisco Security Notice
Cisco Aironet EAP Debugging Denial of Service Vulnerability
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7998
CVE ID: CVE-2014-7998
Release Date: 2014 November 14 21:21 UTC (GMT)
Last Updated: 2014 November 14 21:21 UTC (GMT)
Summary
A vulnerability in the debugging features of Cisco IOS running on Aironet
Access Points could allow an unauthenticated, adjacent attacker to create a
denial of service condition.
The vulnerability is due to a failure to properly process a certain debugging
message that may occur when the debug dot11 aaa authenticator all command is
enabled and a specifically malformed EAP packet is received. An attacker
could exploit this vulnerability by sending a packet crafted to trigger the
issue while a network administrator is actively debugging the device.
This vulnerability was reported to Cisco by Maxim Salomon and Timo Warns of
Airbus Operations GmbH.
Affected Products
Product More Information CVSS
IOS CSCul15509 5.7/4.7
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.
- --------------------------END INCLUDED TEXT--------------------
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