Why are there loopholes in the website to be repaired

Why do many website systems have this security vulnerability , Some of the websites I refer to here are those of small companies , Or some personal website system , For example, like Ali 、 tencent 、 Baidu, these big companies , They have their own development team and related security personnel , Their vulnerabilities are relatively very, very few . So a website , Once this security vulnerability exists , It may cause huge economic losses . Generally, if there is a website with this security vulnerability , It will cause this data to be maliciously modified , Or some sensitive data is stolen , Thus causing economic losses .

Next, I will explain it to you through a case , If you have seen this case , You can skip , Enter the following detailed description . Here I have prepared a website for you , So this website , You can also use Baidu , Then search for keywords , You can find its official website . Then the official website , When we test this security vulnerability in advance , It is found that there is a high-risk injection vulnerability . Of course, if this loophole , We will also inform their relevant technical personnel , Technical maintenance personnel , Then help them fix this vulnerability , This website is also licensed before vulnerability testing , Never test vulnerabilities without authorization .

So today, I'll show you how to use this vulnerability . Because it has this security vulnerability , Then the data of the website above will be maliciously modified , For example, some lawless elements , He can modify the customer service contact number , Of course, some pictures and data above can be modified , For example, the official QR code , Then I'll show you how to use this vulnerability .

First of all, we need to use a tool , So this tool is specially used to scan vulnerabilities , Then let's test this website first , Change the number of customer service into 400120-120, In this case, we need to use an attack script , Then let's copy , Then open this tool , Then we will fill in the injection script , Then it has a backstage address , We just fill in the address of its website , Then let's click on the injection script , Then let's refresh , And let's see , The words in this become this 400120120, Then next, let's try to modify its QR code , Because it is a two-dimensional code, it is in the form of a picture , So we have to prepare a QR code in advance , QR code picture , For example, we have prepared this QR code in advance , This is a replaced QR code , Then let's execute the attack script , Then take a look at this specific effect , Let's copy this code , Then, in the same words, click the injection script in the injection script , Then let's refresh and have a look . Let's see , The QR code of the location has been modified .

The demonstration of this vulnerability can be seen through the above case , Because the website has this security vulnerability , It will cause some information to be modified . For example, some contact information , There are also some QR codes or pictures, etc . If you are doing this advertising , Because this promotion page has this security vulnerability , It will cause you to spend money on advertising for others .

So back to this topic , So why do many websites have this security vulnerability , First of all, because the vast majority of such small companies or individuals have such website systems , Usually, it is not developed by ourselves , They are purchased through some online channels , For example, Taobao or some personal technology developers , And bought it from there .

So these technology developers or some Taobao stores , Do they have a very strong technical foundation , Of course not. , They also download the relevant source code on the Internet , Then build it for you , So many prices are very low , For example, there are tens of dollars, hundreds of dollars and thousands of dollars , Like some CMS System , The blog system , Then the enterprise website system and so on .

good , But these source codes downloaded from the Internet , Has he been hacked into some backdoors in advance , Or whether the source code has this code defect , In this case, others won't care about this problem at all , What others care about is to build a good system for you , Then the acceptance is passed , You pay and you're done .

Usually, the correct way is to conduct this security audit on these systems , Carry out this safety audit and check , See if it has this security vulnerability . For another, you need to do some safety tests , Even if the code has this defect . The second reason is mainly because there are many such systems now , It uses a wide variety of open source components , Then usually a mature system , It will contain numbers 10 This kind of component , Do these components have this security risk .

If once others have studied this loophole , And you have to use this set of source code , Then it will be easily broken by others , For example, the previous dream weaving dedeCMS, It will have upload vulnerabilities , Lead to domestic 60% Our website systems have been taken down by hackers , Then do Baidu gray keywords and so on . Of course, there are many reasons for the security vulnerability of this anti station , Because of this time , I will not give examples one by one , If there is anything you don't understand , Or it needs the technical support of this related website vulnerability repair , Can come to find SINE Seek relevant technical support for safety