CVE-2021-1224

CVSS V2 Medium 5 CVSS V3 Medium 5.3
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.
Overview
  • CVE ID
  • CVE-2021-1224
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2021-01-13T22:15:20
  • Last Modified Date
  • 2023-02-19T04:15:12
Weakness Enumerations
CWE URL
NVD-CWE-Other http://cwe.mitre.org/data/definitions/NVD-Other.html
CWE-693 http://cwe.mitre.org/data/definitions/693.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:firepower_management_center:2.9.17:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:firepower_management_center:2.9.18:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:firepower_management_center:3.0.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* 1 OR 6.7.0
AND
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* 1 OR 17.4.1
cpe:2.3:h:cisco:csr_1000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isa_3000:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-8p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4321:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4351:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4451-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:* 1 OR 2.9.17
AND
cpe:2.3:o:cisco:meraki_mx64_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx64:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx64w_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx64w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx67_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx67:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx67c_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx67c:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx67w_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx67w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx68_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx68:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx68cw_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx68cw:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx68w_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx68w:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx100_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx84_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx84:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx250_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx250:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:meraki_mx450_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:meraki_mx450:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-tfo-bypass-MmzZrtes Vendor Advisory
https://www.debian.org/security/2023/dsa-5354
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-1224
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1224
History
Created Old Value New Value Data Type Notes
2022-05-10 07:26:58 Added to TrackCVE
2022-12-05 20:09:40 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-05 20:09:40 2021-01-13T22:15Z 2021-01-13T22:15:20 CVE Published Date updated
2022-12-05 20:09:40 2022-08-05T19:30:01 CVE Modified Date updated
2022-12-05 20:09:40 Analyzed Vulnerability Status updated
2023-02-11 03:12:53 2023-02-11T02:20:43 CVE Modified Date updated
2023-02-11 03:12:53 Analyzed Modified Vulnerability Status updated
2023-02-11 03:12:53 Weakness Enumeration update
2023-02-11 03:12:53 References updated
2023-02-19 05:12:05 2023-02-19T04:15:12 CVE Modified Date updated
2023-02-19 05:12:06 References updated