CVE-2021-31756

CVSS V2 High 10 CVSS V3 Critical 9.8
Description
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copied to the stack variable.
Overview
  • CVE ID
  • CVE-2021-31756
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-07T23:15:07
  • Last Modified Date
  • 2021-05-10T14:56:53
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:tenda:ac11_firmware:*:*:*:*:*:*:*:* 1 OR 02.03.01.104_cn
cpe:2.3:h:tenda:ac11:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 10
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/Yu3H0/IoT_CVE/tree/main/Tenda/CVE_1 Exploit Issue Tracking Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31756
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31756
History
Created Old Value New Value Data Type Notes
2022-05-10 16:16:35 Added to TrackCVE
2022-12-05 01:52:45 2021-05-07T23:15Z 2021-05-07T23:15:07 CVE Published Date updated
2022-12-05 01:52:45 2021-05-10T14:56:53 CVE Modified Date updated
2022-12-05 01:52:45 Analyzed Vulnerability Status updated