Cisco Security Advisory
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:U/RC:UR
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A vulnerability in processing network traffic of the Cisco Unified IP Conference Station 7937G could allow an unauthenticated, remote attacker to create a denial of service (DoS) condition on the affected device.
The vulnerability is due to resource constraints in processing a high rate of network traffic. An attacker could exploit this vulnerability by sending a high rate of TCP packets to the device. An exploit could allow the attacker to render the device unable to communicate on the network until the DoS condition ends.
Cisco has confirmed this vulnerability in a security notice; however, software updates are not available.
To exploit this vulnerability, an attacker may require access to trusted, internal networks to send a high rate of TCP packets to the affected device. This access requirement could limit the likelihood of a successful exploit.
Cisco indicates through the CVSS score that proof-of-concept exploit code exists; however, the code is not known to be publicly available.
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Customers should refer to Cisco bug ID CSCuh42052 for the most complete list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco Unified IP Conference Station 7937G Firmware versions 1.4.4 and prior were vulnerable. Later releases of Cisco Unified IP Conference Station 7937G Firmware may also be affected.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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Administrators are advised to contact the vendor regarding future updates and releases.
Administrators are advised to allow only trusted users to have network access.
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 affected systems.
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Software updates are not available.
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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 2013-Jul-19
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