CVE-2019-12673: Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software FTP Inspection Denial of Service Vulnerability
First published: Wed Oct 02 2019(Updated: )
A vulnerability in the FTP inspection engine of Cisco Adaptive Security (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of FTP data. An attacker could exploit this vulnerability by sending malicious FTP traffic through an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Adaptive Security Appliance | <9.6.4.34 | |
| Cisco Adaptive Security Appliance Software | >=9.7<9.8.4.10 | |
| Cisco Adaptive Security Appliance Software | >=9.9<9.9.2.56 | |
| Cisco Adaptive Security Appliance Software | >=9.10<9.10.1.30 | |
| Cisco Adaptive Security Appliance Software | >=9.12<9.12.2.5 | |
| Cisco Asa 5505 | ||
| Cisco Asa 5510 | ||
| Cisco Asa 5512-x | ||
| Cisco Asa 5515-x | ||
| Cisco Asa 5520 | ||
| Cisco Asa 5525-x | ||
| Cisco Asa 5550 | ||
| Cisco Asa 5555-x | ||
| Cisco Asa 5580 | ||
| Cisco Asa 5585-x | ||
| Cisco Firepower Threat Defense | <6.3.0.5 | |
| Cisco Firepower Threat Defense | >=6.4.0<6.4.0.4 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-12673?
CVE-2019-12673 is a vulnerability in the FTP inspection engine of Cisco Adaptive Security (ASA) Software and Cisco Firepower Threat Defense (FTD) Software that could allow a remote attacker to cause a denial of service (DoS) condition on an affected device.
What is the severity of CVE-2019-12673?
The severity of CVE-2019-12673 is high with a CVSS score of 7.5.
Which software is affected by CVE-2019-12673?
Cisco Adaptive Security (ASA) Software and Cisco Firepower Threat Defense (FTD) Software versions up to 9.6.4.34, 9.7 through 9.8.4.10, 9.9 through 9.9.2.56, 9.10 through 9.10.1.30, and 9.12 through 9.12.2.5 are affected.
How can an attacker exploit CVE-2019-12673?
An attacker can exploit CVE-2019-12673 by sending specially crafted FTP traffic to a vulnerable device, causing a denial of service (DoS) condition.
Where can I find more information about CVE-2019-12673?
You can find more information about CVE-2019-12673 in the Cisco Security Advisory at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-asa-dos
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- version/cisco adaptive security appliance software/9.12
- canonical/cisco asa 5505
- canonical/cisco asa 5510
- canonical/cisco asa 5512-x
- canonical/cisco asa 5515-x
- canonical/cisco asa 5520
- canonical/cisco asa 5525-x
- canonical/cisco asa 5550
- canonical/cisco asa 5555-x
- canonical/cisco asa 5580
- canonical/cisco asa 5585-x
- canonical/cisco firepower threat defense
- version/cisco firepower threat defense/6.4.0