Tenda AC6/AC9/AC15/AC118 V15.03.05 httpd SetNetControlList list buffer overflow

Summaryinfo

A vulnerability categorized as critical has been discovered in Tenda AC6, AC9, AC15 and AC118 V15.03.05. Affected by this vulnerability is an unknown functionality of the file /goform/SetNetControlList of the component httpd. The manipulation of the argument list as part of POST Request results in buffer overflow. This vulnerability is reported as CVE-2020-13394. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability was found in Tenda AC6, AC9, AC15 and AC118 V15.03.05. It has been classified as critical. Affected is an unknown functionality of the file /goform/SetNetControlList of the component httpd. The manipulation of the argument list as part of a POST Request leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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/SetNetControlList list parameter for a POST request, a value is directly used in a strcpy 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.

The weakness was disclosed 05/22/2020. This vulnerability is traded as CVE-2020-13394 since 05/22/2020. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-155561, VDB-155560, VDB-155559 and VDB-155558 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Tenda

Name

• AC6
• AC9
• AC15
• AC118

Version

• V15.03.05

License

• commercial

Website

• Vendor: https://www.tenda.com.cn/

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Duplicate

• Submit #XXXXXX: Xxxxx Xxx Xx.x Xxx.xx.xx.xx Xxxxxx Xxxxxxxx (by yhryhryhr_miemie)

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