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- Example analysis of remote code execution vulnerability in vBulletin5.x version
- 1. Vulnerability introduction: There is a file inclusion issue in vBulletin, which allows malicious visitors to include files from the vBulletin server and execute arbitrary PHP code. An unverified malicious visitor can trigger the file inclusion vulnerability by issuing a GET request containing the routestring= parameter to index.php, eventually leading to a remote code execution vulnerability. 2. Vulnerability principle The index.php page sends a GET request to use the routestring parameter include When working with local files, functional functions are called layer by layer to filter the value of routestring. Let’s look at the main processing code. The code is located in /includes/vb5/frontend
- Safety 1509 2023-05-19 23:46:04
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- What is the webshell analysis of obfuscated deformation?
- What is WebShell? In the beginning, Webshell was often used as the abbreviation of a type of script used by Web server administrators to remotely manage the server. Later, with the birth of some Webshell management tools, the process of obtaining Web permissions was greatly simplified, so it was gradually called a Web intrusion tool script. Webshell is different from vulnerabilities, but uses application vulnerabilities or server vulnerabilities (file upload vulnerabilities, file inclusion vulnerabilities, etc.) to upload script files to the server for subsequent exploitation. It belongs to the subsequent exploitation of penetration testing and the TA0002Execution (execution) stage of ATT&CK. Figure 1TA0002 reference source: https
- Safety 1010 2023-05-19 23:07:12
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- How to analyze the EIGRP protocol
- 1. Brief description of EIGRP protocol EIGRP (Enhanced Inerior Gateway Routing Protocol) is a balanced hybrid routing protocol that combines the advantages of distance vector and link state routing protocols. It is also a CISCO proprietary protocol. EIGRP is an efficient routing protocol. Its characteristics are: establishing and maintaining neighbor relationships by sending and receiving Hello packets, and exchanging routing information; using multicast (224.0.0.10) or unicast for routing updates; EIGRP management Distances are 90 and 170; use triggered updates to reduce bandwidth usage; support variable length subnet mask (VLSM), automatically enabled by default
- Safety 1709 2023-05-19 21:57:00
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- How to write Android login interface
- 0x01Android Programming---The login interface explains that this must be learned when learning programming. This time we will not operate the database. There is no registration interface, just a simple login interface. The demo is still modified as before. Well, I know how to do it anyway, so I’m going to be lazy. 1. Change the layout first of all a user name frame. Then a login password box. Then there is a login button to preview our interface. We make a simple adjustment. The overall code is as follows: 2. Bind the control. Well, in order to resemble a login interface, I also changed the name. So rebind. 3. Logically write login.setOnClickListener(newView.OnClickLis
- Safety 2500 2023-05-19 21:52:53
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- How to implement empty array in Javascript
- Empty Array If you want to clear an array, just set the length of the array to 0. Well, this is a bit simple. varplants=['Saturn','Earth','Uranus','Mercury','Venus','Earth','Mars','Jupiter'];plants
- Safety 1122 2023-05-19 20:12:14
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- How to briefly discuss the security issues of APP
- 1 Background Analysis When the Internet era came, people once lamented that everything was being digitized. Today, everything is mobile. In the streets and alleys, people were busy swiping their screens with their heads down. According to statistics from foreign authoritative organizations, Chinese smartphones have accounted for 96% of total mobile phone sales. The ancient feature phones have basically withdrawn from the stage of history. According to a recent report by eMarketer, an American market research company, data from Gartner, an authoritative market research organization, shows that in China, smartphones account for 96% of mobile phone sales, while the United States also accounts for 96%. In other words, at the hardware level of mobile Internet, China and the United States are already on the same level. The popularity of smart phones has promoted the rapid development of mobile apps. Currently, mobile apps can involve
- Safety 2116 2023-05-19 19:52:53
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- What is CNNVD's report on Drupal Core remote code execution vulnerabilities?
- The National Information Security Vulnerability Database (CNNVD) received reports about DrupalCore remote code execution vulnerabilities (CNNVD-201804-1490, CVE-2018-7602). An attacker who successfully exploited this vulnerability could conduct remote code execution attacks on the target system. Multiple versions of Drupal, including version 7.x and version 8.x, are affected by this vulnerability. Currently, part of the vulnerability verification code for this vulnerability has been made public on the Internet, and Drupal has officially released a patch to fix the vulnerability. It is recommended that users promptly confirm whether they are affected by the vulnerability and take patching measures as soon as possible. 1. Vulnerability introduction Drupal is a set of free and open source software developed in PHP language maintained by the Drupal community.
- Safety 1069 2023-05-19 18:55:32
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- Example analysis of discovering chat application vulnerabilities in the 'Thomas the Tank Engine' smart toy APP
- Background of the Vulnerability Discovery ToyTalk is an artificial intelligence toy startup founded by former Pixar executives. The smart toys they design have visual tracking, voice recognition and network expansion functions, allowing children to communicate with the toys through voice communication and behavioral responses through the APP. Identify and stimulate children's ability to talk to virtual characters, and better realize the fun of interaction with toys. ToyTalk launched a paid APP called "Thomas & Friends Talk To You" in July 2015, which allows children to interact and chat with the famous cartoon character "Thomas the Tank Engine". Children allowed under 8
- Safety 1648 2023-05-19 18:31:49
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- What is Django development method
- PART1. Before we start, Django, as a powerful web application framework, has gradually become popular in recent years. More and more Python developers are investing in Django. However, due to the many contents in Django, everyone is still in the early stage When I enter Django, I always feel a little "a little bit overwhelmed" and don't know where to start. Or after a preliminary understanding, I don’t know whether the current approach is elegant, how to organize a project, and how to reuse my own code. PART2. Project structure A good project structure is half the battle. 2.1 Overall structure By default, the project structure generated by Django is roughly like this: With the Applicati in the project
- Safety 919 2023-05-19 17:44:32
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- What are the basic applications of cacti?
- Monitor the local virtual machine linuxconsole->management->devices, click ADD on the right and enter the following content, click create to select the graph template and data template required for monitoring and save them. After saving, click CreateGraphsforthishost to select the image data that needs to be generated. OK, click Create and continue to click CREATE to create the image. Successfully add the device to the tree. Console->management->graphtrees, click DefaultTree, and then click ADD to enter as shown below. Click Create to add the device.
- Safety 1142 2023-05-19 17:25:06
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- What code execution vulnerabilities does Apple fix in iOS and iPadOS?
- Apple this week fixed multiple critical code execution vulnerabilities affecting its iOS and iPadOS mobile operating systems. The IT giant released iOS 14.3 and iPadOS 14.3, which fixed 11 security vulnerabilities, including code execution vulnerabilities. Attackers can use malicious font files to exploit the most severe vulnerabilities to execute malicious code on Apple iPhones and iPads. The vendor fixed two font parsing vulnerabilities, CVE-2020-27943 and CVE-2020-27944. Apple said in a security advisory that the two vulnerabilities exist in the FontParser component and that there is memory corruption in the function that handles font files. The vulnerability has been fixed by optimizing input validation.
- Safety 864 2023-05-19 16:26:22
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- What are the attack methods of Ddos?
- The three attack methods of DDoS are: 1. SYN/ACKFlood attack; mainly by sending a large number of SYN or ACK packets with forged source IPs and source ports to the victim host, causing the host's cache resources to be exhausted or busy sending response packets to cause rejection. Serve. 2. TCP full connection attack; it is designed to bypass conventional firewall inspections. 3. Script attack; characterized by establishing a normal TCP connection with the server and constantly submitting queries, lists and other calls that consume a large number of database resources to the script program. The biggest headache for websites is being attacked. Common server attack methods mainly include the following: port penetration, port penetration, password cracking, and DDOS attacks. Among them, DDOS is currently the most powerful and the most
- Safety 3417 2023-05-19 16:10:52
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- How to learn more about ARP protocol
- 1. MAC definition MAC is called the hardware address, which is the unique identifier of the device in the network, totaling 48 bits. For example, my wireless MAC: 8C-A9-82-96-F7-66 is displayed in the system as a combination of 6 numbers composed of hexadecimal. For example, the first digit of 8C is 8__c and the number of binary digits is 4X2=8 digits and 8X6=48 digits. Extended content: This address is globally unique and there are no duplicate MAC addresses. If duplicate MAC addresses appear in the switching network, there must be a loop. The loop phenomenon will cause the communication to be blocked or not at all. 2. PC communication within LAN (IP and MAC) There is a thing in the world called a computer, and there are LOL and CF on the computer, haha. The IT world is full of
- Safety 1747 2023-05-19 15:15:26
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- How to use deep linking to backdoor Facebook APP
- Recently, the author discovered a deep link vulnerability in the Facebook Android APP. Using this vulnerability, the Facebook Android APP installed on the user's mobile phone can be converted into a backdoor program (Backdoor) to achieve backdooring. In addition, this vulnerability can also be used to repackage the Facebook APP and send it to specific target victims for installation and use. Let’s take a look at the author’s discovery process of this vulnerability, and how to construct it through Payload and finally transform it into a security risk in the actual production environment of Facebook APP. When I usually do public testing when discovering vulnerabilities, I will first carefully understand the application mechanism of the target system. In my last blog, I have shared how to parse Face
- Safety 1715 2023-05-19 14:49:36
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- Analysis of switch port security examples
- [Experiment name] Port security configuration of the switch [Experiment purpose] Master the port security function of the switch and control users' secure access [Background description] You are the network administrator of a company, and the company requires strict control of the network. In order to prevent IP address conflicts among users within the company, and prevent network attacks and sabotage within the company. Each employee is assigned a fixed IP address, and only company employee hosts are allowed to use the network, and no other hosts are allowed to connect at will. For example: the IP address assigned to an employee is 172.16.1.55/24, the host MAC address is 00-06-1B-DE-13-B4, and the host is connected to a 2126G. [Requirements Analysis] For all ports of the switch, configure
- Safety 2040 2023-05-19 13:55:58
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