CVE-2020-13392 Information

Description

An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01 AC9 V1.0 V15.03.05.19(6318)CN AC9 V3.0 V15.03.06.42_multi AC15 V1.0 V15.03.05.19_multi_TD01 and AC18 V15.03.05.19(6318)_CN devices. There is a buffer overflow vulnerability in the router’s web server – httpd. While processing the /goform/setcfm funcpara1 parameter for a POST request a value is directly used in a sprintf to a local variable placed on the stack which overwrites the return address of a function. An attacker can construct a payload to carry out arbitrary code execution attacks.

CVSS Vector

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

Reference

https://joel-malwarebenchmark.github.io https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13392-Tenda-vulnerability/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8