VULNERABILITY

Cisco FTD: CVE-2021-1224: Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability

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Cisco FTD: CVE-2021-1224: Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
01/13/2021
Created
02/07/2025
Added
01/29/2025
Modified
02/12/2025

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.

Solution(s)

  • cisco-ftd-upgrade-latest

References

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