CVE-2021-1224 Detail

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  N/A
NVD score not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Cisco Systems, Inc.
Base Score:  5.8 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings. A CNA provided score within the CVE List has been displayed.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-tfo-bypass-MmzZrtes

Weakness Enumeration

CWE-ID CWE Name Source
CWE-693 Protection Mechanism Failure Contributor acceptance level Cisco Systems, Inc.  

Change History

0 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-1224
NVD Published Date:
01/13/2021
NVD Last Modified:
01/14/2021
Source:
Cisco Systems, Inc.