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ReviewHigh

CVE-2020-3304

Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, secure firewall threat defense

A vulnerability in the web interface of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition. Note: This vulnerability applies to IP Version 4 (IPv4) and IP Version...

CVSS
8.6
EPSS
3.86%
89.4% percentile
CISA KEV
Not listed
Published
2020.10.22
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability3.86%
Technical severityCVSS 8.6

Vulnerability overview

A vulnerability in the web interface of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition. Note: This vulnerability applies to IP Version 4 (IPv4) and IP Version...

Affected product and versions

Product
Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, secure firewall threat defense
Affected versions
< 9.6.4.45, < 6.3.0.6, >= 6.4.0 < 6.4.0.10, >= 6.5.0 < 6.5.0.5, >= 6.6.0 < 6.6.1, >= 9.8.0 < 9.8.4.22, >= 9.9.0 < 9.9.2.80, >= 9.10.0 < 9.10.1.44, >= 9.12.0 < 9.12.3.12, >= 9.13.0 < 9.13.1.12, >= 9.14.0 < 9.14.1.10
Fixed versions
9.6.4.45, 6.3.0.6, 6.4.0.10, 6.5.0.5, 6.6.1, 9.8.4.22, 9.9.2.80, 9.10.1.44, 9.12.3.12, 9.13.1.12, 9.14.1.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Cisco Cisco Adaptive Security Appliance (ASA) Software, adaptive security appliance, secure firewall threat defense and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE
CWE-20, CWE-400