Tenda G1/G3 15.11.0.17(9502)_CN formQOSRuleDel qosIndex buffer overflow

Summaryinfo

A vulnerability was found in Tenda G1 and G3 15.11.0.17(9502)_CN. It has been classified as critical. This issue affects the function formQOSRuleDel. The manipulation of the argument qosIndex leads to buffer overflow. This vulnerability is referenced as CVE-2021-27705. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Tenda G1 and G3 15.11.0.17(9502)_CN. This issue affects the function formQOSRuleDel. The manipulation of the argument qosIndex with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was published 04/15/2021. The advisory is shared at hackmd.io. The identification of this vulnerability is CVE-2021-27705. Technical details are known, but no exploit is available.

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

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Productinfo

Type

• Router Operating System

Vendor

• Tenda

Name

• G1
• G3

Version

• 15.11.0.17(9502)_CN

License

• commercial

Website

• Vendor: https://www.tenda.com.cn/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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Submitinfo

Duplicate

• Submit #XXXXXX: Xxxxx Xxxx.x Xxx.xx.x.xx Xxxxxx Xxxxxxxx (by wxhwxhwxh_tutu)

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