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- How to analyze the latest RCE vulnerability in Apache Solr
- Introduction: The RCE0day vulnerability was discovered in ApacheSolr (the vulnerability number is not given). Here we simply reproduce the object and analyze the entire RCE process for your reference. Vulnerability recurrence and recurrence version: 8.1.1 To implement RCE, two steps are required. First, confirm that the application has enabled a certain core (can be viewed in CoreAdmin). In the instance, the application has enabled mycore, and then first send the following to its config interface. json data, {"update-queryresponsewriter":{"startup":"lazy","
- Safety 1521 2023-05-25 18:58:30
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- Example Analysis of Wireless Network Security in Big Data
- There are many important IT resources within the enterprise network, such as OA servers, ERP servers, etc. Once these business hosts stop working or are attacked, they will directly affect the normal operation of the business and cause heavy losses. In the case of wired networks, security is relatively reliable. At this stage, most companies provide wireless Internet access; as long as the client knows the wireless password, it can access the company's LAN, causing security risks. The key point is that your wireless password is not secure: software such as aircrack can brute force the wireless password. Once an employee installs software such as a wifi key, your wireless connection is public. The way guest and office networks are separated does not prevent guests from connecting to the office network.
- Safety 1214 2023-05-25 17:46:25
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- How to configure and verify network equipment Telnet
- In normal work and maintenance, we often use common remote connection methods such as Telnet or SSL. Today I want to write about the configuration and verification of Telnet. First of all, we need to understand what Telnet is. Telnet is a way to access devices remotely through an IP network. It has three verification methods: no password verification, password verification, local username and password verification. Its port is TCP/23 port. Next we configure Telnet: The network topology is as shown in the figure below. 1. First set the IP address of the PC to 192.168.100.1/24, as shown in the figure below. 2. Configure the IP address of the port connected to the network on the router [RT1]intg0
- Safety 3289 2023-05-25 16:58:21
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- Example analysis of Samba security vulnerabilities
- Today, Samba reported another major vulnerability. The vulnerability is currently numbered CVE-2015-0240. An uninitialized pointer in the Samba daemon smbd can be exploited remotely. She can allow a malicious Samba client to send a specific netlogon packet to thereby Obtain the permission to run smbd, and the default permission of smbd is still the root super administrator. This vulnerability affects Samba3.5 and higher versions. Most current GNU/Linux distributions will be affected. The vulnerability analysis report of RedHatSecurityTeam has been released. The current solution to temporarily reduce the risk: add: r in /etc/samba/smb.conf
- Safety 981 2023-05-25 16:40:06
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- How are websites hijacked?
- Network security is becoming increasingly severe. Webmaster friends have more or less encountered the experience of being hacked and hijacked. For friends who are honest and conscientious about their website, they have finally made some achievements, but they will be hijacked. It’s back to before liberation. In this issue, let’s discuss what are the common ways for websites to be hacked and hijacked? How to prevent and repair these risks? Turn on iis7 website monitoring to detect whether the website has been hijacked, DNS pollution, and whether the website has been hacked. , being attacked, having the title changed, and being linked to black links are also directions that we need to check. 1. Traffic hijacking 1.1 Whole site redirection This type of hijacking is relatively direct and easy to detect. Usually, this type of hijacker will achieve full success by loading js into the page or implanting code into the web server.
- Safety 1850 2023-05-25 14:57:26
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- How to display URL after link using CSS
- Use CSS to display the URL after the link:after{content:"("attr(href)")";} What is cssscss is a computer language used to express file styles such as HTML or XML, mainly used to design web pages Style to make the web page more beautifying. It is also a language for defining style structures such as fonts, colors, positions, etc., and CSS styles can be stored directly in HTML web pages or separate style files, and the priority of style rules is determined by CSS based on this hierarchical structure, thus achieving Cascading effect, developed to this day, CSS can not only decorate web pages, but also format web pages with various scripts.
- Safety 1086 2023-05-25 12:25:21
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- How to set up mesh networking
- Method for mesh networking settings 1. Turn on the mesh network device. 2. Click "Add" above. 3. Wait for the system to search by itself. 4. Select the mesh node routing, and then select the location you want to place it. 5. Just wait for the system to operate on its own.
- Safety 5141 2023-05-25 11:49:05
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- Example analysis of web file upload vulnerabilities
- File upload function module The file upload function is an essential function for most WEB applications. Websites allow users to upload their own avatars, some social networking sites allow users to upload photos, some service websites require users to upload electronic files of supporting materials, and e-commerce websites Allow users to upload pictures to display product conditions, etc. However, the seemingly inconspicuous file upload function can pose huge security risks if security protection measures are not taken. Principle of the file upload vulnerability: When a user uploads a file in the file upload function module, if the WEB application does not effectively verify the security of the file during the file upload process, the attacker can attack the server by uploading malicious files such as WEBshell. Attack, in this case it is believed that the system has a file upload vulnerability.
- Safety 1420 2023-05-25 10:49:37
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- How to perform ipsec instructions and tunnel case analysis
- 1. Introduction to IPSEC IPSec includes security protocol (SecurityProtocol) and key exchange protocol (IKE). It was developed by IETF (Internet Engineering Task Force) and can provide access control, connectionless integrity, and data source for both communicating parties. A general term for a series of network security protocols that provide services such as authentication, anti-replay, encryption, and data flow classification and encryption. The security protocols include AH (Header Authentication Protocol) and ESP (Security Encapsulation Payload); and IKE is a network security protocol based on ISAKMP. (InternetSecurityAssociationandKeyMana
- Safety 1009 2023-05-25 09:50:40
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- How to do URL filtering
- URL filtering 1 creates a class-map (class map) to identify transmission traffic. First, the network segment of the intranet. Second, define a regular expression to determine the (domain name) keyword contained in the URL. Third, check the IP message header to see if it is http traffic. 2 Create a policy-map (policy map) and associate class- map either allows the connection or drops the connection. Usually the policy is applied to the inside (inbound) interface. Only one policy map can be applied to an interface. 3. Apply class-map to the interface. -------------------------------------------------- ------------------
- Safety 2057 2023-05-25 08:55:05
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- How to reasonably use DNSLOG to conduct echo-free security testing
- When actually testing the security issues of some websites, there is no response after execution of some test commands. We can write scripts to perform blind injection, but some websites will block our IP address, so we can set up an IP proxy Pool solution, but blind injection is often very inefficient, so DNSlog injection is produced. Before using dnslog, we need to understand the backtick symbol: Symbol: `Name: backtick, upper delimiter position: backtick, this character is generally in the upper left corner of the keyboard, to the left of the number 1, do not confuse it with single quotes Function: The string enclosed in backticks is interpreted by the shell as a command line. When executed, the shell first executes the command line and replaces the entire backticks with its standard output result.
- Safety 1863 2023-05-25 08:04:29
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- How to get started quickly with Nmap
- 1. Install https://nmap.org/ without going into too much detail. 2. Target machine construction. The target machine used in this article is OWASPBrokenWebApplicationsProject https://sourceforge.net/projects/owaspbwa/ Target machine address 1: 192.168.154.128 target machine address 2: 192.168.3.73. Command line C:\Users\Torjan>nmap--helpNmap7.80(https://nmap.org)Usage:nmap[ScanType(s)][Options]{tar
- Safety 1165 2023-05-24 23:37:14
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- Example analysis of discovering Google Cloud Platform vulnerabilities and receiving bounty
- The following tells the story of a 17-year-old Uruguayan high school student who was interested in information security. Through study and research, he independently discovered a vulnerability in the Google Cloud Platform and received $7,500 (previously, he had discovered a Google host header leak vulnerability worth $10,000). Before talking about the specific details of this vulnerability, I hope readers have some understanding of Google Cloud services and API mechanisms, and can first familiarize themselves with several related concepts. Leading Concept Google runs a management service called Google Service Management, through which Google manages the internal and external interfaces of various application Google systems and cloud services created by users. Under GoogleServiceManagement, users can
- Safety 1105 2023-05-24 22:07:40
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- What are the steps for computer network troubleshooting?
- (1.) Ping127.0.0.1 (If it fails, it means there is a hardware problem. Check whether the network card is installed correctly.) (2.) Ping your local IP (If it fails, it means that TCP/IP is not set correctly. Check if the IP The settings are correct, and confirm that they are not blocked by the firewall) (3) Ping gateway (number) (unavailable, indicating that the main import and export routers in the network environment are faulty or have incorrect settings, causing packets to be unable to enter and exit, and thus unable to connect to other servers) ) (4) Ping the gateway (domain name) (cannot work, it may be a DNS problem) (5) Ping the other party’s IP or website (cannot work, it means there is a problem with the other party’s network server, it may be temporarily shut down or the server is faulty, the reason for the failure is with you irrelevant)
- Safety 1095 2023-05-24 21:46:04
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- How to build SOAR
- Companies considering purchasing a security orchestration, automation, and response (SOAR) solution often worry that their existing incident response programs are not yet mature enough to implement a comprehensive platform with automation and orchestration capabilities. Starting from scratch can seem overwhelming when you have almost no foundation, especially if no one on the team has experience with incident response or security orchestration solutions. Although no one wants to just add automation to an inefficient process, it is obviously unscientific to further consolidate this old way of handling security incidents if the old method itself is no longer good enough. If you want to improve your company's security operations but don't know where to start, the following steps may help you prepare to move to a SOAR platform. 1. Take stock of the current operating conditions and think that you do not
- Safety 941 2023-05-24 20:06:17
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