CVE-2021-46393

CVSS V2 High 7.5 CVSS V3 Critical 9.8
Description
There is a stack buffer overflow vulnerability in the formSetPPTPServer function of Tenda-AX3 router V16.03.12.10_CN. The v10 variable is directly retrieved from the http request parameter startIp. Then v10 will be splice to stack by function sscanf without any security check,which causes stack overflow. By POSTing the page /goform/SetPptpServerCfg with proper startIp, the attacker can easily perform remote code execution with carefully crafted overflow data.
Overview
  • CVE ID
  • CVE-2021-46393
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-03-04T13:15:08
  • Last Modified Date
  • 2022-03-10T14:42:10
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:tenda:ax3_firmware:16.03.12.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:tenda:ax3:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
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/sec-bin/IoT-CVE/tree/main/Tenda/AX3/3 Exploit Third Party Advisory
History
Created Old Value New Value Data Type Notes
2022-05-10 15:46:32 Added to TrackCVE
2022-12-06 11:18:56 2022-03-04T13:15Z 2022-03-04T13:15:08 CVE Published Date updated
2022-12-06 11:18:56 2022-03-10T14:42:10 CVE Modified Date updated
2022-12-06 11:18:56 Analyzed Vulnerability Status updated