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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.1449 Cisco AnyConnect Secure Mobility Client Privilege Escalation Vulnerability 4 June 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco AnyConnect Secure Mobility Client Publisher: Cisco Systems Operating System: Linux variants Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2015-0761 Original Bulletin: http://tools.cisco.com/security/center/viewAlert.x?alertId=39158 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability Alert Cisco AnyConnect Secure Mobility Client Privilege Escalation Vulnerability Threat Type: CWE-264: Permissions, Privileges, and Access Control IntelliShield ID: 39158 Version: 2 First Published: 2015 June 02 22:14 GMT Last Published: 2015 June 03 20:35 GMT Port: Not available CVE: CVE-2015-0761 Urgency: Unlikely Use Credibility: Confirmed Severity: Moderate Damage CVSS Base: 6.8 CVSS Version 2.0 CVSS Temporal: 5.6 Version Summary: IntelliShield has updated the alert to correct information regarding affected products and the availability of software updates. Description A vulnerability in the code of Cisco AnyConnect Secure Mobility Client for Linux could allow an authenticated, local attacker to elevate privileges to those of the root user. The vulnerability is due to improper implementation of some internal functions. An attacker could exploit this vulnerability by accessing the system and calling the vpnagent with some options. An exploit could allow the attacker to obtain privileged access to the system. Cisco has confirmed the vulnerability and released software updates. Updated! Warning Indicators Cisco AnyConnect Secure Mobility Client versions prior to 3.1(8009) and 4.0(2052) are vulnerable. IntelliShield Analysis To exploit this vulnerability, an attacker must authenticate and have local access to the targeted device. These access requirements decrease the likelihood of a successful exploit. This vulnerability can be exploited only on systems running on Linux platforms. Systems on Mac OS and Microsoft Windows platforms are not affected by this vulnerability. Cisco would like to thank Graham Markall for reporting this vulnerability. Vendor Announcements Cisco has released bug ID CSCus86790 for registered users, which contains additional details and an up-to-date list of affected product versions. Impact An authenticated, local attacker could exploit this vulnerability to gain elevated privileges on an affected device. A successful exploit could result in a complete system compromise. Technical Information The vulnerability is due to improper implementation of some internal functions on an affected device. An attacker could exploit this vulnerability by accessing the system and calling the vpnagent with some options. An exploit could allow the attacker to obtain privileged access to the system. Safeguards Administrators are advised to apply the appropriate updates. Administrators are advised to allow only trusted users to access local systems. 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 Version 1, June 2, 2015, 6:14 PM: Cisco AnyConnect Secure Mobility Client contains a vulnerability that could allow an authenticated, local attacker to gain elevated privileges. Updates are available. Product Sets The security vulnerability applies to the following combinations of products. Primary Products: Cisco Cisco AnyConnect Secure Mobility Client 3.1 .07021 | 4.0 .00048, .00051 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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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 iQIVAwUBVW+gNRLndAQH1ShLAQKYMw/+KRXAPGuekTqupnTl43kc4zq/2H9TsnDo 8HAnZQAldmiqlq+4MokO/Qs5BHeupRHzTP/t8gKKXr2OrSDnezls632P6/XDHYfu UaBVd7nhES+TYw34taJxqLWvC4oRthpD5uybAOb77S+dDYN7yzDB1PjzhzDfhBDX yCYWSR+nXn+u5vuTHCviIwA1UsD3qr6Qi7Zh8+Qe3Bfn79EJiQ6nGg9oDycdJ+Is Frn4PcDslKr2qp3lRsfsZt73bp9pDtb1d1a8HW9VDJbAoJcahrTwIFCnBqgK0chJ ErPGAKUVL4VxZLq4XtT2lBrHpYmZezVUWnAAvHAHrn5W1vlJJCi/1HCK6tz8fjtr gyLwKzmvUwqXmz5QBnjq/hEEElFZdvuuQA33Od9m19pbnR4A9guYAjqptV5qLFmC zzdQ7iZ5kwuZJO8fXOmPPVk7pKgVA633CzUcRgFdMhqrANzjggF1LZgImXq5Pg8/ NC+AfGTNBgVXy9qEXdUIpQJXIfnoA+qCSq6BhbUcAh/RacB3mWNKFtKH+pvKIkC2 WUrErxkpaZsREh0xy8+PtFF0H7914Fhc9BvY1Axz1UAm2IGJfRyMUDhkSigHagUg ONBlmMrRDJ7fqPoNBg6R0YlqDA6yl4nYdpLAiq6xW3yIoQKsmqzJE0kQwLiskDT1 hXGkmuuZ7e4= =iGOc -----END PGP SIGNATURE-----