CVE-2021-1224
5.8 · MEDIUMOverview
CVE-2021-1224 is a medium-severity vulnerability affecting cisco secure_firewall_management_center. It was published on January 13, 2021 and has a CVSS 3.1 base score of 5.8 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Multiple Cisco products are affected by a vulnerability with TCP Fast Open (TFO) when used in conjunction with the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect detection of the HTTP payload if it is contained at least partially within the TFO connection handshake. An attacker could exploit this vulnerability by sending crafted TFO packets with an HTTP payload through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
Remediation
Check the references section for vendor advisories and patches from cisco. Update secure_firewall_management_center to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| cisco | secure_firewall_threat_defense | >= 0, < 6.7.0 | Affected |
| cisco | ios_xe | >= 0, < 17.4.1 | Affected |
| snort | snort | >= 0, < 2.9.17 | Affected |
References
Frequently Asked Questions
What is CVE-2021-1224?
CVE-2021-1224 is a medium-severity vulnerability affecting cisco secure_firewall_management_center. It was published on January 13, 2021 and has a CVSS 3.1 base score of 5.8 (MEDIUM).
How severe is CVE-2021-1224?
This vulnerability has a CVSS 3.1 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-1224?
Check the references section for vendor advisories and patches from cisco. Update secure_firewall_management_center to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-1224?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-1224 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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