CVE-2019-1703: Cisco Firepower Threat Defense Software Packet Processing Denial of Service Vulnerability
First published: Fri May 03 2019(Updated: )
A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for the Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error, which may prevent ingress buffers from being replenished under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to consume all input buffers, which are shared between all interfaces, leading to a queue wedge condition in all active interfaces. This situation would cause an affected device to stop processing any incoming traffic and result in a DoS condition until the device is reloaded manually.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Firepower Threat Defense | >=6.2.1<6.2.3.12 | |
| Cisco Firepower 2110 | ||
| Cisco Firepower 2120 | ||
| Cisco Firepower 2130 | ||
| Cisco Firepower 2140 | ||
| All of | ||
| Cisco Firepower Threat Defense | >=6.2.1<6.2.3.12 | |
| Any of | ||
| Cisco Firepower 2110 | ||
| Cisco Firepower 2120 | ||
| Cisco Firepower 2130 | ||
| Cisco Firepower 2140 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco Firepower Threat Defense vulnerability?
The vulnerability ID for this Cisco Firepower Threat Defense vulnerability is CVE-2019-1703.
What is the impact of the CVE-2019-1703 vulnerability?
The impact of the CVE-2019-1703 vulnerability is a denial of service (DoS) condition on an affected device, causing it to stop processing traffic.
Which Cisco Firepower Threat Defense Software versions are affected by CVE-2019-1703?
Cisco Firepower Threat Defense Software versions 6.2.1 to 6.2.3.12 are affected by CVE-2019-1703.
How can an attacker exploit CVE-2019-1703?
An unauthenticated, remote attacker can exploit CVE-2019-1703 to cause an affected device to stop processing traffic by exploiting the internal packet-processing functionality of Cisco Firepower Threat Defense Software.
Are Cisco Firepower 2110, 2120, 2130, and 2140 vulnerable to CVE-2019-1703?
No, Cisco Firepower 2110, 2120, 2130, and 2140 are not vulnerable to CVE-2019-1703.
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