CVE-2021-46393

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.
References
Link Resource
https://github.com/sec-bin/IoT-CVE/tree/main/Tenda/AX3/3 Exploit Third Party Advisory
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Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:tenda:ax3_firmware:16.03.12.10:*:*:*:*:*:*:*
cpe:2.3:h:tenda:ax3:-:*:*:*:*:*:*:*

Information

Published : 2022-03-04 05:15

Updated : 2022-03-10 06:42


NVD link : CVE-2021-46393

Mitre link : CVE-2021-46393


JSON object : View

CWE
CWE-787

Out-of-bounds Write

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Products Affected

tenda

  • ax3
  • ax3_firmware