Cisco Integrated Services Router TCP Fast Open protection mechanism

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$5k-$25k0.13

A vulnerability classified as problematic has been found in Cisco Integrated Services Router, Industrial Security Appliance, Services Router 1000V, Firepower Threat Defense, Integrated Services Virtual Router and Meraki MX Security Appliance (Firewall Software). This affects an unknown functionality of the component TCP Fast Open. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-693. This is going to have an impact on integrity.

The weakness was released 01/14/2021 as cisco-sa-snort-tfo-bypass-MmzZrtes. It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2021-1224. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/14/2021).

Upgrading eliminates this vulnerability.

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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-693
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

01/14/2021 Advisory disclosed
01/14/2021 +0 days VulDB entry created
01/14/2021 +0 days VulDB last update

Sourcesinfoedit

Vendor: https://www.cisco.com/

Advisory: cisco-sa-snort-tfo-bypass-MmzZrtes
Status: Confirmed

CVE: CVE-2021-1224 (🔒)

Entryinfoedit

Created: 01/14/2021 12:25 PM
Changes: (37) software_vendor software_name software_component vulnerability_cwe vulnerability_cvss3_vuldb_av vulnerability_cvss3_vuldb_ac vulnerability_cvss3_vuldb_pr vulnerability_cvss3_vuldb_ui vulnerability_cvss3_vuldb_s vulnerability_cvss3_vuldb_c vulnerability_cvss3_vuldb_i vulnerability_cvss3_vuldb_a vulnerability_cvss3_vuldb_rl vulnerability_cvss3_vuldb_rc advisory_identifier advisory_url countermeasure_name source_cve advisory_date software_type vulnerability_cvss2_vuldb_av vulnerability_cvss2_vuldb_ac vulnerability_cvss2_vuldb_au vulnerability_cvss2_vuldb_ci vulnerability_cvss2_vuldb_ii vulnerability_cvss2_vuldb_ai vulnerability_cvss2_vuldb_rc vulnerability_cvss2_vuldb_rl vulnerability_cvss2_vuldb_e vulnerability_cvss3_vuldb_e vulnerability_cvss2_vuldb_basescore vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_basescore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore exploit_price_0day
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