CVE-2020-3334: Cisco Firepower 2100 Series Security Appliances ARP Denial of Service Vulnerability
First published: Wed May 06 2020(Updated: )
A vulnerability in the ARP packet processing of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Security Appliances could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect processing of ARP packets received by the management interface of an affected device. An attacker could exploit this vulnerability by sending a series of unicast ARP packets in a short timeframe that would reach the management interface of an affected device. A successful exploit could allow the attacker to consume resources on an affected device, which would prevent the device from sending internal system keepalives and eventually cause the device to reload, resulting in a denial of service (DoS) condition.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Adaptive Security Appliance Software | >=9.10<9.10.1.37 | |
| Cisco Adaptive Security Appliance Software | >=9.12<9.12.3 | |
| Cisco Adaptive Security Appliance Software | >=9.13<9.13.1.2 | |
| Cisco Firepower Threat Defense | <6.6.0 | |
| Cisco Firepower 2110 | ||
| Cisco Firepower 2120 | ||
| Cisco Firepower 2130 | ||
| Cisco Firepower 2140 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3334?
CVE-2020-3334 is a vulnerability in the ARP packet processing of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software.
How does CVE-2020-3334 affect Cisco devices?
CVE-2020-3334 could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.
Which Cisco devices are affected by CVE-2020-3334?
Cisco Adaptive Security Appliance (ASA) Software versions 9.10 to 9.10.1.37, 9.12 to 9.12.3, and 9.13 to 9.13.1.2, as well as Cisco Firepower Threat Defense (FTD) Software version 6.6.0 are affected.
What is the severity of CVE-2020-3334?
CVE-2020-3334 has a severity score of 7.4, which is considered high.
How can I fix CVE-2020-3334?
Apply the necessary security updates provided by Cisco to fix the vulnerability.
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- canonical/cisco adaptive security appliance software
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- version/cisco adaptive security appliance software/9.12
- version/cisco adaptive security appliance software/9.13
- canonical/cisco firepower threat defense
- canonical/cisco firepower 2110
- canonical/cisco firepower 2120
- canonical/cisco firepower 2130
- canonical/cisco firepower 2140