Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1335 Cisco Web Security Appliance Web Tracking Report Page Cross-Site Scripting Vulnerability 18 May 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Web Security Appliance Web Publisher: Cisco Systems Operating System: Cisco Virtualisation Impact/Access: Cross-site Scripting -- Remote with User Interaction Resolution: Mitigation CVE Names: CVE-2015-0738 Original Bulletin: http://tools.cisco.com/security/center/viewAlert.x?alertId=38884 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability Alert Cisco Web Security Appliance Web Tracking Report Page Cross-Site Scripting Vulnerability Threat Type: CWE-79: Cross-Site Scripting (XSS) IntelliShield ID: 38884 Version: 1 First Published: 2015 May 15 19:47 GMT Last Published: 2015 May 15 19:47 GMT Port: Not available CVE: CVE-2015-0738 Urgency: Unlikely Use Credibility: Confirmed Severity: Mild Damage CVSS Base: 4.3 CVSS Temporal: 4.1 Version Summary: Cisco Web Security Appliance contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. Updates are not available. Description A vulnerability in the Web Tracking Report page of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to perform a cross-site scripting (XSS) attack against the user of the web interface. The vulnerability is due to improper validation of user-supplied input in a field on the Web Tracking Report page. An attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected site or allow the attacker to access sensitive browser-based information. Cisco has confirmed the vulnerability; however, software updates are not available. Warning Indicators At the time this alert was first published, Cisco WSA release 8.5.0-497 was vulnerable. Later releases of Cisco WSA may also be vulnerable. IntelliShield Analysis To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link. Vendor Announcements Cisco has released bug ID CSCuu16008 for registered users, which contains additional details and an up-to-date list of affected product versions. Impact An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code in the user's browser session in the context of the affected site. A successful exploit could allow the attacker to access sensitive browser-based information such as authentication cookies and recently submitted data. Technical Information The vulnerability is due to insufficient validation of user-supplied input submitted to the Web Tracking Report page of an affected device. An unauthenticated, remote attacker could exploit this vulnerability by persuading a user to follow a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected site or allow the attacker to access sensitive, browser-based information. Safeguards Administrators are advised to contact the vendor regarding future updates and releases. Users should verify that unsolicited links are safe to follow. For additional information about XSS attacks and the methods used to exploit these vulnerabilities, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Scripting (XSS) Threat Vectors. Administrators are advised to monitor affected systems. Patches/Software Software updates are not available. Alert History Initial Release Product Sets The security vulnerability applies to the following combinations of products. Primary Products: Cisco Cisco Web Security Appliance (WSA) 8.5 .0-497 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 iQIVAwUBVVlOaRLndAQH1ShLAQLkwg//YI6muunmU89ToenePG0ZZuT8aIAycxGM iKmz6n7s+8awDJeZLqJ3qPEDmgDnN4fBRhoZu9XeVCMeqhvABoawsKYmuh+RpORu YxyNMnHfVvW3hViNJkuI7qzkdty1UX4jhrLxOjOm1bL+C4lNW6czB6ultAMXKN67 dop9CvM/sWsYkpW/PndJ4nn1DTi4NAohXGrK9wxXla/JNmbSIn1bHmAwhYhgRAuc fMard0scTka1f4TVJofsui7hW5uPtLGFgu+SjzgRA4jFCX1Xzo6vtn/YXFBix/Pe R99EiOE99WqTJ/IUAmA8mEHjtNaXo9WW9dbcyYMuzN37A3btwOy0zOokUdWIugU6 AGB6Q0ZiRkXoK/1G22DGW5UXbhXpgJpqxmXM1ncPOF0LNcMKeNjVfVRdHt/bOaDr eGDc9eGz3P1PbrFef2BpTi2a/GmJQlYSrBsDF5ZcGiLGRQvFBjXvYox8AnqOW8fl zeCy9iXm3TWj97mn48B1sMfAMVUygwJJScziJepP8jwstQYZWBo11f7NmbATB9J7 6Vd9ogy+90bSH6mk+Nm5MPpuqYdpCYotXxfR6uPr/+OXlR3lJg1H3Cea1RydoIN/ RGgPc1mXAjjpMhYLPyLHUVMSWbRO/VsuCk9hC7U1vk/rc6Kd50py3cMvGPoU1y1r YgPM8ueYfos= =NXm/ -----END PGP SIGNATURE-----