Cisco Security Advisory
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CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
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A vulnerability in the web-based GUI of Cisco Mobility Express 1800 Series Access Points could allow an unauthenticated, remote attacker to bypass authentication. The attacker could be granted full administrator privileges.
The vulnerability is due to improper implementation of authentication for accessing certain web pages using the GUI interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web interface of the affected system. A successful exploit could allow the attacker to bypass authentication and perform unauthorized configuration changes or issue control commands to the affected device.
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-20170315-ap1800
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Vulnerable Products
This vulnerability affects Cisco Mobility Express 1800 Series Access Points running a software version prior to 8.2.110.0. To determine which software version is running on a device, administrators can use the web interface or issue the show version command from the CLI. In this example, the device is running software version 8.1.10.159.
# show version
Cisco AP Software, (ap1g4), [cheetah-build:/local/build/JENKINS/workspace/Nightly-Cheetah-corsica-v8_1_throttle-cco]
Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Thu Jul 23 09:45:56 PDT 2015
ROM: Bootstrap program is U-Boot boot loader
BOOTLDR: U-Boot boot loader Version 17
AP38ED.18CC.1C20 uptime is 0 days, 0 hours, 1 minutes
Last reload time : Thu Oct 22 04:07:54 UTC 2015
Last reload reason : capwapd triggered reboot
cisco AIR-AP1852E-Z-K9 ARMv7 Processor rev 0 (v7l) with 997184/802540K bytes of memory.
Processor board ID KWC192900P1
AP Image version (active) : 8.1.10.159
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.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 the following Cisco products:
- Mobility Express 2800 Series Access Points
- Mobility Express 3800 Series Access Points
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There are no workarounds that address this vulnerability.
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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 upgrade 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 following table:
Mobility Express 1800 Series Access Point Major Release First Fixed Release 8.1 Affected; migrate to 8.2.130.0 or later
8.2 8.2.130.0 or later
8.3 Not Vulnerable
Note: The first fixed software release was 8.2.110.0, which has been deferred from the Cisco Download Software page. The 8.2.130.0 or later software release should be used.
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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.
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Cisco would like to thank security researcher Bijay Limbu Senihang of Rigo Information Technology for finding and reporting this vulnerability.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.3 Metadata update. — Final 2017-October-06 1.2 Metadata update. — Final 2017-September-27 1.1 Metadata update. — Final 2017-September-21 1.0 Initial public release. — Final 2017-March-15
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