Vulnerability-Lookup

BDU:2021-00416 (CVE-2021-1224)

Vulnerability from fstec – Published: 2021-02-02 – Updated: 2023-09-13 – View on bdu.fstec.ru Fixed

Title

Уязвимость расширения протокола TCP Fast Open (TFO) системы обнаружения вторжений Snort, позволяющая нарушителю обойти настроенную файловую политику для HTTP

Summary

Уязвимость расширения протокола TCP Fast Open (TFO) системы обнаружения вторжений Snort связана с недостатками механизма защиты данных. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, обойти настроенную файловую политику для HTTP

Severity

5.0 (Medium) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:N/I:P/A:N

5.8 (Medium) CVSS 3.0


                      
                        CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Class

Architecture vulnerability

Status

Confirmed by the vendor

Exploitation

Resource exhaustion

Incidents

Being clarified

Remediation

Software update

CWE

CWE-693 - Нарушение механизма защиты данных

Aliases

CVE-2021-1224

References

2 references

URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-…
https://поддержка.нппкт.рф/bin/view/ОСнова/Обновления/2.8/

Impacted products

4 products from 3 vendors

Vendors

Cisco Systems, Inc., АО «НППКТ»

Products

Firepower Threat Defense, Snort, Cisco IOS XE, ОСОН ОСнова Оnyx (запись в едином реестре российских программ №5913)

Versions

до 6.7.0 (Firepower Threat Defense), до 2.9.17 (Snort), до 17.4.1 (Cisco IOS XE), до 2.8 (ОСОН ОСнова Оnyx)

Product types

Appliance software, Security software, Operating system, Network appliance software

Platforms

Cisco Systems, Inc. Cisco IOS XE до 17.4.1 1000 Series ISRs, Inc. Cisco IOS XE до 17.4.1 Cisco 3000 Series Industrial Security Appliances, Inc. Cisco IOS XE до 17.4.1 4000 Series ISRs, Inc. Cisco IOS XE до 17.4.1 Cisco Cloud Services Router 1000V, Inc. Cisco IOS XE до 17.4.1 Cisco Firepower Threat Defense Software, Inc. Cisco IOS XE до 17.4.1 Cisco Integrated Services Virtual Router, Inc. Cisco IOS XE до 17.4.1 Meraki MX64, Inc. Cisco IOS XE до 17.4.1 Meraki MX64W, Inc. Cisco IOS XE до 17.4.1 Meraki MX67, Inc. Cisco IOS XE до 17.4.1 Meraki MX67C, Inc. Cisco IOS XE до 17.4.1 Meraki MX67W, Inc. Cisco IOS XE до 17.4.1 Meraki MX68, Inc. Cisco IOS XE до 17.4.1 Meraki MX68CW, Inc. Cisco IOS XE до 17.4.1 Meraki MX68W, Inc. Cisco IOS XE до 17.4.1 Meraki MX100, Inc. Cisco IOS XE до 17.4.1 Meraki MX84, Inc. Cisco IOS XE до 17.4.1 Meraki MX250, Inc. Cisco IOS XE до 17.4.1 Meraki MX450, АО «НППКТ» ОСОН ОСнова Оnyx до 2.8 (запись в едином реестре российских программ №5913)

Mitigations

Использование рекомендаций: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-tfo-bypass-MmzZrtes Для ОСОН ОСнова Оnyx: Обновление программного обеспечения snort до версии 2.9.20+repack-0+deb10u1.osnova1

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Cisco Systems, Inc., \u0410\u041e \u00ab\u041d\u041f\u041f\u041a\u0422\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "\u0434\u043e 6.7.0 (Firepower Threat Defense), \u0434\u043e 2.9.17 (Snort), \u0434\u043e 17.4.1 (Cisco IOS XE), \u0434\u043e 2.8 (\u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-tfo-bypass-MmzZrtes\n\n\u0414\u043b\u044f \u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx:\n\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f snort \u0434\u043e \u0432\u0435\u0440\u0441\u0438\u0438 2.9.20+repack-0+deb10u1.osnova1",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "13.01.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "13.09.2023",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "02.02.2021",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2021-00416",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-1224",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Firepower Threat Defense, Snort, Cisco IOS XE, \u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21165913)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 1000 Series ISRs, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Cisco 3000 Series Industrial Security Appliances, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 4000 Series ISRs, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Cisco Cloud Services Router 1000V, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Cisco Firepower Threat Defense Software, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Cisco Integrated Services Virtual Router, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX64, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX64W, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX67, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX67C, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX67W, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX68, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX68CW, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX68W, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX100, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX84, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX250, Cisco Systems, Inc. Cisco IOS XE \u0434\u043e 17.4.1 Meraki MX450, \u0410\u041e \u00ab\u041d\u041f\u041f\u041a\u0422\u00bb \u041e\u0421\u041e\u041d \u041e\u0421\u043d\u043e\u0432\u0430 \u041enyx \u0434\u043e 2.8  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21165913)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 TCP Fast Open (TFO) \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0432\u0442\u043e\u0440\u0436\u0435\u043d\u0438\u0439 Snort, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u0431\u043e\u0439\u0442\u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u043f\u043e\u043b\u0438\u0442\u0438\u043a\u0443 \u0434\u043b\u044f HTTP",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0437\u0430\u0449\u0438\u0442\u044b \u0434\u0430\u043d\u043d\u044b\u0445 (CWE-693)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 TCP Fast Open (TFO) \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0432\u0442\u043e\u0440\u0436\u0435\u043d\u0438\u0439 Snort \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0437\u0430\u0449\u0438\u0442\u044b \u0434\u0430\u043d\u043d\u044b\u0445. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e, \u043e\u0431\u043e\u0439\u0442\u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u0443\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u043f\u043e\u043b\u0438\u0442\u0438\u043a\u0443 \u0434\u043b\u044f HTTP",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u0418\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-tfo-bypass-MmzZrtes\nhttps://\u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430.\u043d\u043f\u043f\u043a\u0442.\u0440\u0444/bin/view/\u041e\u0421\u043d\u043e\u0432\u0430/\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f/2.8/",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u041e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430, \u041f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u043e \u0437\u0430\u0449\u0438\u0442\u044b, \u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u041e \u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-693",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5)\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5,8)"
}

CVE-2021-1224 (GCVE-0-2021-1224)

Vulnerability from cvelistv5 – Published: 2021-01-13 21:16 – Updated: 2024-11-12 20:48

Title

Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability

Summary

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

5.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-08 20:06 UTC

CWE

CWE-693

Assigner

cisco mitre root

References

3 references

URL	Tags
https://tools.cisco.com/security/center/content/C…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2023…	mailing-list
https://www.debian.org/security/2023/dsa-5354	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Firepower Threat Defense Software	Affected: n/a

Date Public

2021-01-13 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:02:56.126Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20210113 Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-tfo-bypass-MmzZrtes"
          },
          {
            "name": "[debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html"
          },
          {
            "name": "DSA-5354",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2023/dsa-5354"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1224",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-08T20:06:11.617988Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-12T20:48:38.628Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Firepower Threat Defense Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2021-01-13T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-693",
              "description": "CWE-693",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2023-02-19T00:00:00.000Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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      "references": [
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          "name": "20210113 Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability",
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        },
        {
          "name": "[debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update",
          "tags": [
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          "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html"
        },
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      ],
      "source": {
        "advisory": "cisco-sa-snort-tfo-bypass-MmzZrtes",
        "defect": [
          [
            "CSCvt43136",
            "CSCvu88532"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Multiple Cisco Products Snort TCP Fast Open File Policy Bypass Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2021-1224",
    "datePublished": "2021-01-13T21:16:53.450Z",
    "dateReserved": "2020-11-13T00:00:00.000Z",
    "dateUpdated": "2024-11-12T20:48:38.628Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.