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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1323 Cisco Wireless LAN Controller Web Administration Interface Authenticated Remote Denial of Service Vulnerability 15 May 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Wireless LAN Controller Publisher: Cisco Systems Operating System: Cisco Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-0726 Original Bulletin: http://tools.cisco.com/security/center/viewAlert.x?alertId=38789 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability Alert Cisco Wireless LAN Controller Web Administration Interface Authenticated Remote Denial of Service Vulnerability Threat Type: CWE-20: Input Validation IntelliShield ID: 38789 Version: 1 First Published: 2015 May 13 16:12 GMT Last Published: 2015 May 13 16:12 GMT Port: Not available CVE: CVE-2015-0726 Urgency: Unlikely Use Credibility: Confirmed Severity: Mild Damage CVSS Base: 6.8 CVSS Calculator CVSS Version 2.0 CVSS Temporal: 5.6 Version Summary: Cisco Wireless LAN Controller contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service condition. Updates are available. Description A vulnerability in the web administration interface of Cisco Wireless LAN Controllers (WLC) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of certain parameters submitted as part of form requests prior to processing. An attacker could exploit this vulnerability by submitting a crafted request to a targeted device. If successful, the attacker could cause the device to crash, resulting in a DoS condition. Cisco has confirmed the vulnerability and released software updates. Warning Indicators At the time this alert was first published, Cisco WLC Software versions prior to 7.0.241, 7.4.122, or 7.6.120 were vulnerable. IntelliShield Analysis To exploit this vulnerability, an attacker must authenticate to the targeted device. This access requirement decreases the likelihood of a successful exploit. Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available. Vendor Announcements Cisco has released bug IDs CSCum65159 and CSCum65252 for registered users, which contain additional details and an up-to-date list of affected product versions. Impact An authenticated, remote attacker could exploit this vulnerability to cause an affected device to crash, resulting in a DoS condition. Technical Information The vulnerability is due to improper validation of certain parameters submitted as part of form requests prior to processing by an affected device. An attacker could exploit this vulnerability by submitting a crafted request to a targeted device. If successful, the attacker could cause the device to crash, resulting in a DoS condition. Safeguards Administrators are advised to apply the appropriate updates. Administrators are advised to allow only trusted users to have network access. Administrators are advised to allow only privileged users to access administration or management systems. Administrators are advised to monitor affected systems. Patches/Software Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at tac@cisco.com. Alert History Initial Release Product Sets The security vulnerability applies to the following combinations of products. Primary Products: Cisco Cisco Wireless LAN Controller (WLC) 7.0 Base, 98.0, 98.218, 116.0, 220.0 | 7.4 Base, 1.54, .100, .100.60, .110.0, .121.0 | 7.6 .100.0, .110.0 Associated Products: N/A Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment. LEGAL DISCLAIMER The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVVVVVxLndAQH1ShLAQL/Fg//Zty0si1MZl4Z4LUCQC70BANL1fhQZ5ia HvFJfxOg+f5wl6u9iXnf+H7Xg0L4SJ4X057ki1uGEnDyQs30akAocajAPYVz1Aus kw+xa3l8+k8dWZZdscMfzpZkJH/IqcT/vwMhoStQLI3dCR/5066sZ8XEhvPDTZ7G tDfk5UrT+7Pc2G85/ZznojmOPyBPZPtBFi07TrxZZiGIFmL59cRYzhG528s5MdxF cVv7r/pndW/ejgRgETNQUKmUM6E0S07UfLaTjpeXYQ769cJ409NU/XD3OM/BhRHj qztOAecUmeynM7JQeBexsXUc7dhglYZ8qN7GzdAPqm+hbXf8s0M5ROyorZJOHOm5 C9tUs6DfXIBJOggvWo+S/XrgMzcGS8y9Aa9QQFskYjMINDWc0XH1AAH5AUvbsML0 Mb03eAHXBLCQkyVYJLOhQam/69UIAJQK01f1IZEZT7oHDzE4hAjoK3Ql8/hkaD+X jISUSKnGvoZLoSclqjDipaLBMK8zjidBeTaRhRMqbHrrQzhny3x7v8A/AsTBi7dj CmzdB2GQ/ywdvfhPztII3uO7q4SIFOPuKKYzC5NbVnjjrfEB3cx83RDlDvL+ybJ+ a3liumeCtPQ2X4c0hLsDZx7jiYXpCXhJtpu/sjGIGgH2mr4ppxhxOTbcsSq6WUMZ VSulonY01w4= =4eMO -----END PGP SIGNATURE-----