Cisco Security AdvisoryMedium
Advisory ID:
Cisco-SA-20130226-CVE-2013-1138
First Published:
2013 February 26 15:52 GMT
Last Updated:
2016 August 29 15:41 GMT
Version 1.1:
Workarounds:
No workarounds available
Cisco Bug IDs:
CVSS Score:
Base 5.0,
Temporal 4.8
Click Icon to Copy Verbose Score
AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:U/RC:C
Click Icon to Copy Verbose Score
AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:U/RC:C
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Cisco Adaptive Security Appliance (ASA) Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to the improper implementation of the Network Address Translation (NAT) process by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted packets to the targeted device. If successful, an attacker could cause a delay in new valid connections until the invalid entries expire, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. However, mitigations for this vulnerability are available.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/Cisco-SA-20130226-CVE-2013-1138
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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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 can help protect affected systems from external attacks by using a solid firewall strategy.
Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.
Administrators are advised to monitor affected systems.
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Cisco provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
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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 1.1 Updated to indicate that fixed software is available. Summary, Affected Products, Vulnerable Products, Fixed Software Final 2016-August-29 1.0 Initial release. — Final 2013-February-26
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