CVE-2021-1224
Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability
MEDIUM 5.3EPSS 2.0%
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
- Cisco · Cisco Firepower Threat Defense Software
- CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS v3.1 CISCO
- 5.8 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N - CVSS v2.0 NVD
- 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N - EPSS
- 2.05% chance of exploitation in the next 30 days, 81st percentile
- Published
- 2021-01-13
- Updated
- 2024-11-12
Proof-of-concept exploits (1)
- kernelr0p/threat-generator0★ · 2022-03-14