Vulnerability Description
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arbitrary-sized files to specific folders on an affected device, which could lead to an unexpected device reload. The vulnerability exists because the affected software does not efficiently handle the writing of large files to specific folders on the local file system. An attacker could exploit this vulnerability by uploading files to those specific folders. A successful exploit could allow the attacker to write a file that triggers a watchdog timeout, which would cause the device to unexpectedly reload, causing a denial of service (DoS) condition.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Adaptive Security Appliance | < 9.6.4.45 |
| Cisco | Firepower Threat Defense | <= 6.2.2 |
| Cisco | Adaptive Security Appliance Software | >= 9.8.0, < 9.8.4.25 |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aVendor Advisory
FAQ
What is CVE-2020-3436?
CVE-2020-3436 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to upload arb...
How severe is CVE-2020-3436?
CVE-2020-3436 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-2020-3436?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Adaptive Security Appliance, Cisco Firepower Threat Defense, Cisco Adaptive Security Appliance Software.