Cisco Security Advisory
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:OF/RC:C
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Cisco Emergency Responder contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.
The vulnerability is due to the improper handling of malformed UDP packets by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by submitting malformed UDP packets to the vulnerable software. If successful, the attacker could cause a targeted device to consume excessive CPU resources, resulting in a DoS condition.
Cisco has confirmed this vulnerability and released software updates.
A successful exploit could allow an attacker to cause a device to stop responding, potentially preventing authorized users from accessing network resources served by the targeted device.
To exploit the vulnerability, an attacker must send malformed UDP packets to a targeted device. The attacker may need access to trusted, internal networks, which could limit the likelihood of a successful exploit.
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.
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Cisco has issued release notes for Cisco bug ID CSCtx38369 at the following link: Release Notes for Cisco Emergency Responder
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Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators can help protect affected systems from external attacks by using a solid firewall strategy.
Administrators are advised to monitor affected 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-09
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