20 April 2015
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1075 Cisco Secure Access Control Server Dashboard Page Cross-Site Request Forgery Vulnerability 20 April 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Secure Access Control Server Publisher: Cisco Systems Operating System: Windows VMware ESX Server Impact/Access: Cross-site Request Forgery -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2015-0700 Original Bulletin: http://tools.cisco.com/security/center/viewAlert.x?alertId=38403 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability Alert Cisco Secure Access Control Server Dashboard Page Cross-Site Request Forgery Vulnerability Threat Type: CWE-352: Cross-Site Request Forgery (CSRF) IntelliShield ID: 38403 Version: 1 First Published: 2015 April 16 14:54 GMT Last Published: 2015 April 16 14:54 GMT Port: Not available CVE: CVE-2015-0700 Urgency: Unlikely Use Credibility: Confirmed Severity: Mild Damage CVSS Base: 4.3 CVSS Calculator CVSS Version 2.0 CVSS Temporal: 3.6 Version Summary: Cisco Secure Access Control Server contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site request forgery attacks. Updates are available. Description A vulnerability in the Dashboard page in the monitoring and report section of Cisco Secure Access Control Server could allow an unauthenticated, remote attacker to perform a cross-site request forgery (CSRF) attack. The vulnerability is due to the improper generation and validation of the CSRF token by an affected system. An unauthenticated, remote attacker could exploit this vulnerability by persuading a user of the affected system to follow a malicious link or visit an attacker-controlled website. A successful exploit could allow the attacker to perform unauthorized actions on the targeted system on behalf of the user. Cisco has confirmed the vulnerability and released software updates. Warning Indicators Cisco Secure Access Control Server Solution Engine prior to version 5.5(0.46.5) are affected. 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 convince the user to follow the link. 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 ID CSCuj62924 for registered users that contains additional details and an up-to-date list of affected product versions. Impact An unauthenticated, remote attacker could exploit this vulnerability to take unauthorized actions on behalf of a targeted user. Successful exploitation could allow the attacker to conduct further attacks. Technical Information The vulnerability is due to the improper generation and validation of the CSRF token by an affected system. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user of the affected system to follow a malicious link or visit an attacker-controlled website. A successful exploit could allow the attacker to perform unauthorized actions on the targeted system on behalf of the user. Safeguards Administrators are advised to apply the appropriate updates. Users should verify that unsolicited links are safe to follow. For additional information about CSRF attacks and potential mitigation methods, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Request Forgery Threat Vectors. 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 firstname.lastname@example.org. Alert History Initial Release Product Sets The security vulnerability applies to the following combinations of products. Primary Products: Cisco Cisco Secure Access Control Server Solution Engine (ACSE) 5.5 (0.36), (0.46.4) | 5.4 (0.46.6) 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. 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