CVE-2020-3452: Cisco ASA and FTD Read-Only Path Traversal Vulnerability
Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an improper input validation vulnerability when HTTP requests process URLs. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device.
| Vendor | Cisco |
|---|---|
| Product | Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) |
| Date added to KEV | 2021-11-03 |
| Due date (BOD 22-01) | 2022-05-03 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-20 |
| Required action | Apply updates per vendor instructions. |
What to do
- Identify every instance of Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply updates per vendor instructions.
- Federal civilian agencies must act by 2022-05-03 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2020-3452 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://nvd.nist.gov/vuln/detail/CVE-2020-3452