Cisco Security Advisory
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AV:N/AC:L/Au:S/C:N/I:N/A:C/E:F/RL:OF/RC:C
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Cisco IOS Software contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.
The vulnerability is due to an unspecified issue that causes a device running the vulnerable software to reload when the web browser reloads the SSL VPN portal page. An authenticated, remote attacker could exploit this vulnerability by using a web browser to refresh the SSL VPN portal page to cause the device to reload, resulting in a DoS condition. A successful exploit could deny services for legitimate users.
Cisco has confirmed this vulnerability and has released updated software.
A successful exploit would require an attacker to authenticate to a targeted device. This access requirement would likely limit the chances of a successful exploit.
Reports have indicated that the vulnerability was seen on the stock Android browser; however, the issue is not browser-specific and other browsers may trigger this vulnerability.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
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Cisco has released cross-platform release notes for Cisco bug ID CSCtr86328 at the following link: Cross-Platform Release Notes
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Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only privileged users to access administration or management systems.
Administrators are advised to monitor critical systems.
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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 tac@cisco.com.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2012-Aug-10
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