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[email protected]CVE-2021-40127

HistoryNov 04, 2021 - 4:15 p.m.

CVE-2021-40127

2021-11-0416:15:09

CWE-20

[email protected]

web.nvd.nist.gov

cisco

small business

switches

vulnerability

cve-2021-40127

dos

nvd

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

40.8%

JSON

A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business 500 Series Stackable Managed Switches could allow an unauthenticated, remote attacker to render the web-based management interface unusable, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause a permanent invalid redirect for requests sent to the web-based management interface of the device, resulting in a DoS condition.

Affected configurations

NVD

Node

ciscosf200-24_firmwareMatch-

AND

ciscosf200-24Match-

Node

ciscosf200-24fp_firmwareMatch-

AND

ciscosf200-24fpMatch-

Node

ciscosf200-24p_firmwareMatch-

AND

ciscosf200-24pMatch-

Node

ciscosf200-48_firmwareMatch-

AND

ciscosf200-48Match-

Node

ciscosf200-48p_firmwareMatch-

AND

ciscosf200-48pMatch-

Node

ciscosf200e-24_firmwareMatch-

AND

ciscosf200e-24Match-

Node

ciscosf200e-24p_firmwareMatch-

AND

ciscosf200e-24pMatch-

Node

ciscosf200e-48_firmwareMatch-

AND

ciscosf200e-48Match-

Node

ciscosf200e-48p_firmwareMatch-

AND

ciscosf200e-48pMatch-

Node

ciscosg200-08_firmwareMatch-

AND

ciscosg200-08Match-

Node

ciscosg200-08p_firmwareMatch-

AND

ciscosg200-08pMatch-

Node

ciscosg200-10fp_firmwareMatch-

AND

ciscosg200-10fpMatch-

Node

ciscosg200-18_firmwareMatch-

AND

ciscosg200-18Match-

Node

ciscosg200-26_firmwareMatch-

AND

ciscosg200-26Match-

Node

ciscosg200-26fp_firmwareMatch-

AND

ciscosg200-26fpMatch-

Node

ciscosg200-26p_firmwareMatch-

AND

ciscosg200-26pMatch-

Node

ciscosg200-50_firmwareMatch-

AND

ciscosg200-50Match-

Node

ciscosg200-50fp_firmwareMatch-

AND

ciscosg200-50fpMatch-

Node

ciscosg200-50p_firmwareMatch-

AND

ciscosg200-50pMatch-

Node

ciscosf300-08_firmwareMatch1.4.11.02

AND

ciscosf300-08Match-

Node

ciscosf300-24_firmwareMatch1.4.11.02

AND

ciscosf300-24Match-

Node

ciscosf300-24mpMatch-

AND

ciscosf300-24mp_firmwareMatch1.4.11.02

Node

ciscosf300-24pMatch-

AND

ciscosf300-24p_firmwareMatch1.4.11.02

Node

ciscosf300-24ppMatch-

AND

ciscosf300-24pp_firmwareMatch1.4.11.02

Node

ciscosf300-48Match-

AND

ciscosf300-48_firmwareMatch1.4.11.02

Node

ciscosf300-48pMatch-

AND

ciscosf300-48p_firmwareMatch1.4.11.02

Node

ciscosf300-48ppMatch-

AND

ciscosf300-48pp_firmwareMatch1.4.11.02

Node

ciscosf302-08Match-

AND

ciscosf302-08_firmwareMatch1.4.11.02

Node

ciscosf302-08mpMatch-

AND

ciscosf302-08mp_firmwareMatch1.4.11.02

Node

ciscosf302-08mpp_firmwareMatch1.4.11.02

AND

ciscosf302-08mppMatch-

Node

ciscosf302-08p_firmwareMatch1.4.11.02

AND

ciscosf302-08pMatch-

Node

ciscosf302-08pp_firmwareMatch1.4.11.02

AND

ciscosf302-08ppMatch-

Node

ciscosg300-10_firmwareMatch1.4.11.02

AND

ciscosg300-10Match-

Node

ciscosg300-10mp_firmwareMatch1.4.11.02

AND

ciscosg300-10mpMatch-

Node

ciscosg300-10mpp_firmwareMatch1.4.11.02

AND

ciscosg300-10mppMatch-

Node

ciscosg300-10p_firmwareMatch1.4.11.02

AND

ciscosg300-10pMatch-

Node

ciscosg300-10pp_firmwareMatch1.4.11.02

AND

ciscosg300-10ppMatch-

Node

ciscosg300-sfp_firmwareMatch1.4.11.02

AND

ciscosg300-sfpMatch-

Node

ciscosg300-20_firmwareMatch1.4.11.02

AND

ciscosg300-20Match-

Node

ciscosg300-28_firmwareMatch1.4.11.02

AND

ciscosg300-28Match-

Node

ciscosg300-28mp_firmwareMatch1.4.11.02

AND

ciscosg300-28mpMatch-

Node

ciscosg300-28p_firmwareMatch1.4.11.02

AND

ciscosg300-28pMatch-

Node

ciscosg300-28pp_firmwareMatch1.4.11.02

AND

ciscosg300-28ppMatch-

Node

ciscosg300-28sfp_firmwareMatch1.4.11.02

AND

ciscosg300-28sfpMatch-

Node

ciscosg300-52_firmwareMatch1.4.11.02

AND

ciscosg300-52Match-

Node

ciscosg300-52mp_firmwareMatch1.4.11.02

AND

ciscosg300-52mpMatch-

Node

ciscosg300-52p_firmwareMatch1.4.11.02

AND

ciscosg300-52pMatch-

Node

ciscosf500-24_firmwareMatch-

AND

ciscosf500-24Match-

Node

ciscosf500-24mp_firmwareMatch-

AND

ciscosf500-24mpMatch-

Node

ciscosf500-24p_firmwareMatch-

AND

ciscosf500-24pMatch-

Node

ciscosf500-48_firmwareMatch-

AND

ciscosf500-48Match-

Node

ciscosf500-48mp_firmwareMatch-

AND

ciscosf500-48mpMatch-

Node

ciscosf500-48p_firmwareMatch-

AND

ciscosf500-48pMatch-

Node

ciscosg500-28_firmwareMatch-

AND

ciscosg500-28Match-

Node

ciscosg500-28mpp_firmwareMatch-

AND

ciscosg500-28mppMatch-

Node

ciscosg500-28p_firmwareMatch-

AND

ciscosg500-28pMatch-

Node

ciscosg500-52_firmwareMatch-

AND

ciscosg500-52Match-

Node

ciscosg500-52mp_firmwareMatch-

AND

ciscosg500-52mpMatch-

Node

ciscosg500-52p_firmwareMatch-

AND

ciscosg500-52pMatch-

Node

ciscosg500x-24_firmwareMatch-

AND

ciscosg500x-24Match-

Node

ciscosg500x-24mpp_firmwareMatch-

AND

ciscosg500x-24mppMatch-

Node

ciscosg500x-24p_firmwareMatch-

AND

ciscosg500x-24pMatch-

Node

ciscosg500x-48_firmwareMatch-

AND

ciscosg500x-48Match-

Node

ciscosg500x-48mpp_firmwareMatch-

AND

ciscosg500x-48mppMatch-

Node

ciscosg500x-48p_firmwareMatch-

AND

ciscosg500x-48pMatch-

Node

ciscosg500xg-8f8t_firmwareMatch-

AND

ciscosg500xg-8f8tMatch-

CPENameOperatorVersion
cisco:sf200-24_firmwarecisco sf200-24 firmwareeq-

CPE	Name	Operator	Version
cisco:sf200-24_firmware	cisco sf200-24 firmware	eq	-

CNA Affected

[
  {
    "product": "Cisco Small Business Smart and Managed Switches ",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smb-switches-web-dos-xMyFFkt8

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

40.8%

JSON

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