# CVE-2020-3452

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. 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. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.

- Page: https://www.vulneraibility.com/cve/CVE-2020-3452
- CVSS: 7.5
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2022-05-03
- EPSS: 99.99% (percentile 100.0)
- Public exploit code: 3 on Exploit-DB · 23 GitHub proofs of concept · 1 Nuclei template (first 2020-07-24)
- CISA SSVC: exploitation active, automatable yes, technical impact partial (assessed 2025-02-04)
- Weakness: CWE-20
- Published: 2020-07-22

## Affected versions

- Cisco Cisco Adaptive Security Appliance (ASA) Software: affected < 9.6.4.42; < 9.8.4.20; < 9.9.2.74; < 9.10.1.42; < 9.13.1.10; < 9.14.1.10

A version outside these ranges is not a statement that it is unaffected.

## References

- [advisory] https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86
- [other] http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html
- [other] http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html
- [other] http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html
- [other] http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3452

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.