A vulnerability in the implementation of Traffic Flow Confidentiality (TFC) over IPsec functionality in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote malicious user to cause an affected device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error that may occur if the affected software renegotiates the encryption key for an IPsec tunnel when certain TFC traffic is in flight. An attacker could exploit this vulnerability by sending a malicious stream of TFC traffic through an established IPsec tunnel on an affected device. A successful exploit could allow the malicious user to cause a daemon process on the affected device to crash, which could cause the device to crash and result in a DoS condition.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
cisco firepower management center 6.2.2 |
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cisco adaptive security appliance software 9.6.4 |
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cisco adaptive security appliance software 9.8.2 |
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cisco adaptive security appliance software 9.9.1 |
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cisco adaptive security appliance software 9.9.1\\(1\\) |
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