AV:L/AC:M/Au:S/C:N/I:N/A:C/E:F/RL:OF/RC:C
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Cisco Intrusion Prevention System (IPS) SensorApp contains a vulnerability that could allow a local attacker to cause a denial of service (DoS) condition.
The vulnerability is due to a job failure in the Regex hardware when processing the control transaction getENGVirtualSensorStatistics. A local attacker could exploit the vulnerability by performing an action that uses the getENGVirtualSensorStatistics control transaction. When the malicious action is processed by the affected device, the SensorApp process may hang or become unresponsive to legitimate commands or control transactions, leading to a DoS condition.
Cisco has confirmed the vulnerability in a security notice and has released software updates.
This vulnerability is applicable only to platforms that implement Regex hardware.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
To exploit this vulnerability, an attacker requires authenticated access to a targeted device and may require access to trusted, internal networks. These access requirements could limit the likelihood of a successful exploit.
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Cisco has released a security notice for bug ID CSCuc74630 at the following link: CVE-2013-1219
Vulnerable Products
At the time this alert was first published, Cisco IPS version 7.1 was vulnerable when running on the following devices:
- IPS 4510
- IPS 4520 SSP10, SSP20, SSP40, and SSP60
- ASA 5525-X
- ASA 5545-X
- ASA 5555-X (with SSP running IPS)
- IPS 4345
- IPS 4360
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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Administrators may consider rebooting an affected device and disabling string-tcp or string-tcp-xl engines or disabling signatures associated with these engines.
Administrators are advised to migrate to signature pack S688 or higher if using any signature packs between S673 to S687.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to access local systems.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to allow only privileged users to access administration or management systems.
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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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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Version Description Section Status Date 1.0 Initial Release NA Final 2013-Apr-29
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