A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software operating in transparent mode could allow an unauthenticated, remote malicious user to poison MAC address tables, resulting in a denial of service (DoS) vulnerability. This vulnerability is due to incorrect handling of certain TCP segments when the affected device is operating in transparent mode. An attacker could exploit this vulnerability by sending a crafted TCP segment through an affected device. A successful exploit could allow the malicious user to poison the MAC address tables in adjacent devices, resulting in network disruption.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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cisco firepower threat defense |
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cisco adaptive security appliance |
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cisco adaptive security appliance software |
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cisco asa_5512-x_firmware 009.008\\(004.025\\) |
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cisco asa_5505_firmware 009.008\\(004.025\\) |
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cisco asa_5515-x_firmware 009.008\\(004.025\\) |
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cisco asa_5525-x_firmware 009.008\\(004.025\\) |
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cisco asa_5545-x_firmware 009.008\\(004.025\\) |
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cisco asa_5555-x_firmware 009.008\\(004.025\\) |
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cisco asa_5580_firmware 009.008\\(004.025\\) |
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cisco asa_5585-x_firmware 009.008\\(004.025\\) |
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