CVE Vulnerabilities

CVE-2021-1224

Published: Jan 13, 2021 | Modified: Nov 07, 2023
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

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.

Affected Software

Name Vendor Start Version End Version
Firepower_management_center Cisco 2.9.14.0 (including) 2.9.14.0 (including)
Firepower_management_center Cisco 2.9.15 (including) 2.9.15 (including)
Firepower_management_center Cisco 2.9.16 (including) 2.9.16 (including)
Firepower_management_center Cisco 2.9.17 (including) 2.9.17 (including)
Firepower_management_center Cisco 2.9.18 (including) 2.9.18 (including)
Firepower_management_center Cisco 3.0.1 (including) 3.0.1 (including)
Firepower_threat_defense Cisco * 6.7.0 (excluding)
Snort Ubuntu bionic *
Snort Ubuntu esm-apps/bionic *
Snort Ubuntu esm-apps/focal *
Snort Ubuntu esm-apps/jammy *
Snort Ubuntu esm-apps/xenial *
Snort Ubuntu esm-infra-legacy/trusty *
Snort Ubuntu focal *
Snort Ubuntu impish *
Snort Ubuntu jammy *
Snort Ubuntu kinetic *
Snort Ubuntu lunar *
Snort Ubuntu mantic *
Snort Ubuntu trusty/esm *
Snort Ubuntu upstream *

References