Cisco Security Advisory
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AV:N/AC:L/Au:N/C:P/I:N/A:N/E:F/RL:W/RC:C
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A vulnerability in the implementation of the time-range object could allow an unauthenticated, remote attacker to bypass access lists that are using the time-range option.
The vulnerability is due to improper implementation of the code for the time-range object, when the periodic command is used. Due to this issue, the time-range object may have no effect. Therefore, depending on the access-list statement (permit or deny), an attacker could bypass the access list. An attacker could exploit this vulnerability by sending traffic through the affected system.
Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
Customers are advised to review the bug reports in the vendor announcements section for a current list of affected versions.
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 a security notice for bug IDs CSCuf79091 and CSCug45850 at the following link: CVE-2013-1195
Vulnerable Products
At the time this alert was first published, the following versions of Cisco products were vulnerable:- Cisco ASA Software versions 8.4.6 and prior
- Cisco FWSM versions 4.1.7 and prior
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.
Customers are advised to review the bug reports in the vendor announcements section for guidance on deploying a workaround to mitigate this vulnerability.
Administrators are advised to allow only trusted users to have network access.
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-Apr-22
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