Cisco Security Advisory
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AV:N/AC:H/Au:S/C:N/I:N/A:C/E:POC/RL:OF/RC:C
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Cisco IOS contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to improper handling of web authentication requests. An authenticated, remote attacker could exploit the vulnerability by sending malicious authentication requests to the affected software. Successful exploitation could cause a DoS condition.
Cisco has confirmed the vulnerability and released software updates.
To exploit the vulnerability, authentication is required, and an attacker may require access to networks adjacent to a targeted device. These requirements increase the difficulty of exploitation.
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Cisco has released release notes for Cisco bug ID CSCts88664 at the following link: Cisco IOS 15.0SE
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Administrators are advised to apply the appropriate updates.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected 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-23
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