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AUSCERT External Security Bulletin Redistribution
ESB-2017.2779
Cisco Aironet Access Point Platforms 802.11 Multiple Vulnerability
2 November 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Aironet Access Point
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-12283 CVE-2017-12281 CVE-2017-12274
CVE-2017-12273
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet1
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet2
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet3
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet4
Comment: This bulletin contains four (4) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Aironet 1560, 2800, and 3800 Series Access Point Platforms 802.11 Denial
of Service Vulnerability
High
Advisory ID:
cisco-sa-20171101-aironet1
First Published:
2017 November 1 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCve12189
CVSS Score:
Base 7.4
CVE-2017-12273
CWE-20
Summary
A vulnerability in 802.11 association request frame processing for the Cisco
Aironet 1560, 2800, and 3800 Series Access Points could allow an
unauthenticated, Layer 2 radio frequency (RF) adjacent attacker to cause the
Access Point (AP) to reload, resulting in a denial of service (DoS) condition.
The vulnerability is due to insufficient frame validation of the 802.11
association request. An attacker could exploit this vulnerability by sending a
malformed 802.11 association request to the targeted device. An exploit could
allow the attacker to cause the AP to reload, resulting in a DoS condition
while the AP is reloading.
Cisco has released software updates that address this vulnerability. There are
no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet1
Affected Products
Vulnerable Products
This vulnerability affects the following Cisco products running either the
Lightweight AP Software or Mobility Express image:
Aironet 1560 Series Access Points
Aironet 2800 Series Access Points
Aironet 3800 Series Access Points
Note: The Cisco Aironet 1560 Series Access Point device is supported as of
release 8.3.112.0.
Determine the Software Version
To determine which version of Cisco Aironet Series Access Point Software is
running on a device, administrators can use the controller web interface or
the CLI.
To use the web interface, log in to the web interface, choose Management >
Software Update and then refer to the release number that appears at the top
of the page.
To use the CLI, issue the show version command and then refer to the value in
the AP Running Image field of the command output. The following example shows
the output of the command for a device running software version 8.3.102.0:
AP# show version
.
.
.
cisco AIR-AP3802E-B-K9 ARMv7 Processor rev 1 (v7l) with 1030528/668540K bytes
of memory.
Processor board ID RFDPP1BS497
AP Running Image : 8.3.102.0
Primary Boot Image : 8.3.102.0
.
.
.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco Aironet 1800
Series Access Points or any Aironet Access Point running Cisco IOS Software.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support for
software versions and feature sets for which they have purchased a license. By
installing, downloading, accessing, or otherwise using such software upgrades,
customers agree to follow the terms of the Cisco software license:
http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html
Additionally, customers may only download software for which they have a valid
license, procured from Cisco directly, or through a Cisco authorized reseller
or partner. In most cases this will be a maintenance upgrade to software that
was previously purchased. Free security software updates do not entitle
customers to a new software license, additional software feature sets, or
major revision upgrades.
When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but are
unsuccessful in obtaining fixed software through their point of sale should
obtain upgrades by contacting the Cisco TAC:
http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
Customers should have the product serial number available and be prepared to
provide the URL of this advisory as evidence of entitlement to a free upgrade.
Fixed Releases
Customers should upgrade to an appropriate release as indicated in the table
in this section. To help ensure a complete upgrade solution, consider that
this advisory is part of a collection that includes the following advisories:
cisco-sa-20171101-aironet1: Cisco Aironet 1560, 2800, and 3800 Series Access
Point Platforms 802.11 Denial of Service Vulnerability
cisco-sa-20171101-aironet2: Cisco Aironet 1560, 2800, and 3800 Series Access
Point Platforms Extensible Authentication Protocol Denial of Service
Vulnerability
cisco-sa-20171101-wlc1: Cisco Wireless LAN Controller Simple Network
Management Protocol Memory Leak Denial of Service Vulnerability
cisco-sa-20171101-wlc2: Cisco Wireless LAN Controller 802.11v Basic Service
Set Transition Management Denial of Service Vulnerability
In the following table, the left column lists releases of Cisco software. The
center column indicates the first recommended release that includes the fix
for this vulnerability. The right column indicates the first recommended
release that includes fixes for all the vulnerabilities described in this
collection of advisories.
Cisco Aironet 1560, 2800, 3800 Access Points Recommended Fixed Release for This Vulnerability Recommended Release for This Vulnerability and All Vulnerabilities Described in the Collection of Advisories
Prior to 8.0 Not applicable 8.0.152.0
8.0 Not applicable 8.0.152.0
8.1 Not applicable 8.2.164.0
8.2 8.2.164.0 8.2.164.0
8.3 8.3.132.0 8.3.132.0
8.4 8.4.100.0 8.4.100.0
8.5 8.5.105.0 8.5.110.0 (future release)
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.
Source
This vulnerability was found during internal security testing.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet1
==============================================================================
Cisco Aironet 1560, 2800, and 3800 Series Access Point Platforms Extensible
Authentication Protocol Denial of Service Vulnerability High
Advisory ID:
cisco-sa-20171101-aironet2
First Published:
2017 November 1 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCve18935
CVSS Score:
Base 7.4
CVE-2017-12274
CWE-20
Summary
A vulnerability in Extensible Authentication Protocol (EAP) ingress frame
processing for the Cisco Aironet 1560, 2800, and 3800 Series Access Points
could allow an unauthenticated, Layer 2 radio frequency (RF) adjacent attacker
to cause the Access Point (AP) to reload, resulting in a denial of service
(DoS) condition.
The vulnerability is due to insufficient validation of the EAP frame. An
attacker could exploit this vulnerability by sending a malformed EAP frame to
the targeted device. A successful exploit could allow the attacker to cause
the AP to reload, resulting in a DoS condition while the AP is reloading. It
may be necessary to manually power cycle the device in order for it to
recover.
Cisco has released software updates that address this vulnerability. There are
no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet2
Affected Products
Vulnerable Products
This vulnerability affects the following Cisco products running either the
Lightweight AP Software or Mobility Express image:
Aironet 1560 Series Access Points
Aironet 2800 Series Access Points
Aironet 3800 Series Access Points
Note: The Cisco Aironet 1560 Series Access Point device is supported as of
release 8.3.112.0.
Determine the Software Version
To determine which version of Cisco Aironet Series Access Point Software is
running on a device, administrators can use the controller web interface or
the CLI.
To use the web interface, log in to the web interface, choose Management >
Software Update and then refer to the release number that appears at the top
of the page.
To use the CLI, issue the show version command and then refer to the value in
the AP Running Image field of the command output. The following example shows
the output of the command for a device running software version 8.3.102.0:
AP# show version
.
.
.
cisco AIR-AP3802E-B-K9 ARMv7 Processor rev 1 (v7l) with 1030528/668540K bytes
of memory.
Processor board ID RFDPP1BS497
AP Running Image : 8.3.102.0
Primary Boot Image : 8.3.102.0
.
.
.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco Aironet 1800
Series Access Points or any Aironet Access Point running Cisco IOS Software.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support for
software versions and feature sets for which they have purchased a license. By
installing, downloading, accessing, or otherwise using such software upgrades,
customers agree to follow the terms of the Cisco software license:
http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html
Additionally, customers may only download software for which they have a valid
license, procured from Cisco directly, or through a Cisco authorized reseller
or partner. In most cases this will be a maintenance upgrade to software that
was previously purchased. Free security software updates do not entitle
customers to a new software license, additional software feature sets, or
major revision upgrades.
When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but are
unsuccessful in obtaining fixed software through their point of sale should
obtain upgrades by contacting the Cisco TAC:
http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
Customers should have the product serial number available and be prepared to
provide the URL of this advisory as evidence of entitlement to a free upgrade.
Fixed Releases
Customers should upgrade to an appropriate release as indicated in the table
in this section. To help ensure a complete upgrade solution, consider that
this advisory is part of a collection that includes the following advisories:
cisco-sa-20171101-aironet1: Cisco Aironet 1560, 2800, and 3800 Series Access
Point Platforms 802.11 Denial of Service Vulnerability
cisco-sa-20171101-aironet2: Cisco Aironet 1560, 2800, and 3800 Series Access
Point Platforms Extensible Authentication Protocol Denial of Service
Vulnerability
cisco-sa-20171101-wlc1: Cisco Wireless LAN Controller Simple Network
Management Protocol Memory Leak Denial of Service Vulnerability
cisco-sa-20171101-wlc2: Cisco Wireless LAN Controller 802.11v Basic Service
Set Transition Management Denial of Service Vulnerability
In the following table, the left column lists releases of Cisco software. The
center column indicates the first recommended release that includes the fix
for this vulnerability. The right column indicates the first recommended
release that includes fixes for all the vulnerabilities described in this
collection of advisories.
Cisco Aironet 1560, 2800, 3800 Access Points Recommended Fixed Release for This Vulnerability Recommended Release for This Vulnerability and All Vulnerabilities Described in the Collection of Advisories
Prior to 8.0 Not applicable 8.0.152.0
8.0 Not applicable 8.0.152.0
8.1 Not applicable 8.2.164.0
8.2 8.2.164.0 8.2.164.0
8.3 8.3.132.0 8.3.132.0
8.4 8.4.100.0 8.4.100.0
8.5 8.5.105.0 8.5.110.0 (future release)
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.
Source
This vulnerability was found during internal security testing.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet2
==============================================================================
Cisco Aironet 1800, 2800, and 3800 Series Access Points MAC Authentication
Bypass Vulnerability
Medium
Advisory ID:
cisco-sa-20171101-aironet3
First Published:
2017 November 1 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCvd46314
CVSS Score:
Base 6.1
CVE-2017-12281
CWE-287
Summary
A vulnerability in the implementation of Protected Extensible Authentication
Protocol (PEAP) functionality for standalone configurations of Cisco Aironet
1800, 2800, and 3800 Series Access Points could allow an unauthenticated,
adjacent attacker to bypass authentication and connect to an affected device.
The vulnerability exists because the affected device uses an incorrect default
configuration setting of fail open when running in standalone mode. An
attacker could exploit this vulnerability by attempting to connect to an
affected device. A successful exploit could allow the attacker to bypass
authentication and connect to the affected device.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet3
Affected Products
Vulnerable Products
This vulnerability affects Cisco Aironet 1800, 2800, and 3800 Series Access
Points that are running a vulnerable software release and use WLAN
configuration settings that include FlexConnect local switching and central
authentication with MAC filtering.
All software releases prior to the first fixed software release are affected
by this vulnerability. For more information about affected software releases,
consult the Cisco bug ID(s) at the top of this advisory.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory.
When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.
Source
This vulnerability was found during the resolution of a Cisco TAC support
case.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet3
==============================================================================
Cisco Aironet 3800 Series Access Points Protected Management Frames User
Denial of Service Vulnerability
Medium
Advisory ID:
cisco-sa-20171101-aironet4
First Published:
2017 November 1 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCvc20627
CVSS Score:
Base 4.7
CVE-2017-12283
CWE-119
Summary
A vulnerability in the handling of 802.11w Protected Management Frames (PAF)
by Cisco Aironet 3800 Series Access Points could allow an unauthenticated,
adjacent attacker to terminate a valid user connection to an affected device.
The vulnerability exists because the affected device does not properly
validate 802.11w PAF disassociation and deauthentication frames that it
receives. An attacker could exploit this vulnerability by sending a spoofed
802.11w PAF frame from a valid, authenticated client on an adjacent network to
an affected device. A successful exploit could allow the attacker to terminate
a single valid user connection to the affected device.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet4
Affected Products
Vulnerable Products
This vulnerability affects Cisco Aironet 3800 Series Access Points that are
running a vulnerable software release and are configured to run in FlexConnect
mode.
This vulnerability affects all releases prior to the first fixed release of
the software. For information about affected software releases, consult the
Cisco bug ID(s) at the top of this advisory.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory.
When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade
solution.
In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release. If
the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance providers.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described
in this advisory.
Source
This vulnerability was found during the resolution of a Cisco TAC support
case.
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171101-aironet4
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