Vulnerability Description
A vulnerability in the cryptographic driver for Cisco Adaptive Security Appliance Software (ASA) and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reboot unexpectedly. The vulnerability is due to incomplete input validation of a Secure Sockets Layer (SSL) or Transport Layer Security (TLS) ingress packet header. An attacker could exploit this vulnerability by sending a crafted TLS/SSL packet to an interface on the targeted device. An exploit could allow the attacker to cause the device to reload, which will result in a denial of service (DoS) condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed and transparent firewall mode and in single or multiple context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic. A valid SSL or TLS session is required to exploit this vulnerability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Asa 5506-X Firmware | 9.6\(4.16\) |
| Cisco | Asa 5506-X | - |
| Cisco | Asa 5506H-X Firmware | 9.6\(4.16\) |
| Cisco | Asa 5506H-X | - |
| Cisco | Asa 5506W-X Firmware | 9.6\(4.16\) |
| Cisco | Asa 5506W-X | - |
| Cisco | Asa 5508-X Firmware | 9.6\(4.16\) |
| Cisco | Asa 5508-X | - |
| Cisco | Asa 5516-X Firmware | 9.6\(4.16\) |
| Cisco | Asa 5516-X | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/109123Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securityfocus.com/bid/109123Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2019-1873?
CVE-2019-1873 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the cryptographic driver for Cisco Adaptive Security Appliance Software (ASA) and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause th...
How severe is CVE-2019-1873?
CVE-2019-1873 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-1873?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Asa 5506-X Firmware, Cisco Asa 5506-X, Cisco Asa 5506H-X Firmware, Cisco Asa 5506H-X, Cisco Asa 5506W-X Firmware.