Cisco AnyConnect Secure Mobility Client contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
Cisco AnyConnect Secure Mobility Client contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system.
The vulnerability is due to insufficient validation of user-supplied input that is received by the 64-bit Java applet that performs the WebLaunch VPN downloader functionality in the affected software. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious website. If successful, the attacker could have the ability to execute arbitrary code with the privileges of the user on the affected system.
Cisco has confirmed this vulnerability in a security advisory and software updates are available.
Cisco AnyConnect Secure Mobility Client versions prior to 2.5 MR6 and 3.0 MR7 are vulnerable when running on Linux 64-bit systems.
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.
This alert contains CVSS scoring supplied by Cisco, the primary vendor of the affected product. Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
An unauthenticated, remote attacker could exploit the vulnerability to execute arbitrary code with the privileges of a user's web browser session on an affected system.
The vulnerability is due to insufficient validation of user-supplied input by the WebLaunch VPN downloader functionality component in the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious website. The processing of malicious input submitted to the affected software by the website could trigger the execution of arbitrary code on the targeted system with the privileges of the user.
Administrators are advised to apply the appropriate updates.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Administrators are advised to monitor affected systems.
The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this vulnerability prior to applying updated software: cisco-amb-20120620-ac
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 e-mail at email@example.com.
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