CVE-2019-1694: Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software TCP Timer Handling Denial of Service Vulnerability
First published: Fri May 03 2019(Updated: )
A vulnerability in the TCP processing engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of TCP traffic. An attacker could exploit this vulnerability by sending a specific sequence of packets at a high rate through an affected device. A successful exploit could allow the attacker to temporarily disrupt traffic through the device while it reboots.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Adaptive Security Appliance Software | <9.4.4.34 | |
| Cisco Adaptive Security Appliance Software | >=9.5<9.6.4.25 | |
| Cisco Adaptive Security Appliance Software | >=9.7<9.8.4 | |
| Cisco Adaptive Security Appliance Software | >=9.9<9.9.2.50 | |
| Cisco Adaptive Security Appliance Software | >=9.10<9.10.1.17 | |
| Cisco ASA 5505 Firmware | ||
| Cisco ASA 5510 firmware | ||
| Cisco ASA 5512-X Firmware | ||
| Cisco ASA 5515-X Firmware | ||
| Cisco ASA Software | ||
| Cisco ASA Software | ||
| Cisco ASA | ||
| Cisco ASA Software | ||
| Cisco ASA 5550 firmware | ||
| Cisco ASA 5555-X Firmware | ||
| Cisco ASA 5580 Firmware | ||
| Cisco ASA 5585-X | ||
| Cisco Secure Firewall Threat Defense | <6.2.3.12 | |
| Cisco Secure Firewall Threat Defense | >=6.3.0<6.3.0.3 | |
| All of | ||
| Any of | ||
| Cisco Adaptive Security Appliance Software | <9.4.4.34 | |
| Cisco Adaptive Security Appliance Software | >=9.5<9.6.4.25 | |
| Cisco Adaptive Security Appliance Software | >=9.7<9.8.4 | |
| Cisco Adaptive Security Appliance Software | >=9.9<9.9.2.50 | |
| Cisco Adaptive Security Appliance Software | >=9.10<9.10.1.17 | |
| Any of | ||
| Cisco ASA 5505 Firmware | ||
| Cisco ASA 5510 firmware | ||
| Cisco ASA 5512-X Firmware | ||
| Cisco ASA 5515-X Firmware | ||
| Cisco ASA Software | ||
| Cisco ASA Software | ||
| Cisco ASA | ||
| Cisco ASA Software | ||
| Cisco ASA 5550 firmware | ||
| Cisco ASA 5555-X Firmware | ||
| Cisco ASA 5580 Firmware | ||
| Cisco ASA 5585-X |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2019-1694.
What is the severity of CVE-2019-1694?
The severity of CVE-2019-1694 is high.
Which software products are affected by CVE-2019-1694?
Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software are affected by CVE-2019-1694.
How can an attacker exploit CVE-2019-1694?
An unauthenticated, remote attacker can exploit CVE-2019-1694 to cause a denial of service (DoS) condition by triggering a reload of the affected device's TCP processing engine.
Where can I find more information about CVE-2019-1694?
You can find more information about CVE-2019-1694 at the following references: [SecurityFocus](http://www.securityfocus.com/bid/108160) and [Cisco Security Advisory](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-frpwrtd-dos).
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