c security vulnerabilities

Php Basics, common vulnerabilities, and simple prevention. Common php attacks and security defense: 1. Xss + SQL injection: Xss protection for input: $ _ REQUEST = filter_xss ($ _ REQUEST); $ _ GET = filter_xss ($ _ GET); $ _ POST, $ _ COOKIE, SQL injection: Filter_ SQL (); The simplest xss function is htmlspecialchars; The simplest SQL function is mysql_real_escape_string (); 2. command execution Php code execution, if eval Execute the sh

I used to write an article on the book's reading notes, but I thought it would be a pass, but it may be because of a large number of scenarios, as a result, I wrote several articles one after another, and I wrote another one today. I thought this book was all about. In the previous article, I talked about the realm of sales personnel. To check whether a company has a future, it depends on what kind of realm a company's boss is in, because only the boss has reached what kind of realm and height,

attackers can construct special SSL requests, which may result inThe SSL function library of WINXP stops responding, but in win2003, the system may restart. Temporary solution:* Block ports 443 and 636 on the firewall 14. ASN.1 "Double Free" VulnerabilityMicrosoft's ASN.1 function library has a remote code execution vulnerability. The cause of this vulnerability is ASN.1.Data Inventory in Double Free (multiple memory space releases), a malicious attacker can construct special codeThis vulner

[Original] "imperfect development software package" for chinabank security vulnerabilities in Online Banking" Http://www.chinabank.com.cn/index/index.shtml Digress: The latest job in the new company plans the entire test team and process construction. Because the company uses outlook2003 for internal communication, it is very annoying to use the outlook spam filter function, more than 1000 of spam mails are sent every day, and the problem is solved o

During vulnerability assessment and penetration testing, we usually focus on operating system-level vulnerabilities and ultimately ignore Layer 7. This is a very dangerous trap because there are many attacks on remote logon and SSH Linux systems. In fact, in my opinion, most Linux-based defects are at the application layer. It may be Apache, PHP, or OpenSSL, or it is only a common error configuration. If the vulnerability can be accessed through HTTP,

Cause of misuse of the shortde1. vulnerability: Include is the most common function for compiling PHP websites and supports relative paths. Many PHP scripts directly use an input variable as an Include parameter, resulting in arbitrary reference scripts, absolute path leakage, and other vulnerabilities. See the following code:... $ includepage $ _ GET [includepage]; include ($ includepage);... it is obvious that include is abused. 1. cause: Include is

The features of Cisco Wireless routers have previously been introduced to you. Today, we are trying to better understand the source of the vulnerabilities and the inner relationship between the vulnerabilities and functions. Recently, it was found that Cisco Wireless Router allows hackers to easily access the network configuration page of the router. 1. What are the functions of Cisco Wireless Router? Why i

Cause of misuse of the shortde1. vulnerability: Include is the most common function for compiling PHP websites and supports relative paths. Many PHP scripts directly use an input variable as an Include parameter, resulting in arbitrary reference scripts, absolute path leakage, and other vulnerabilities. See the following code: Misuse include 1. cause: Include is the most common function for compiling PHP websites and supports relative paths. Many PH

With the rapid development of cloud computing technology, users can store their data on the cloud, and many applications on the cloud platform become important. At the same time, ldquo; Software Definition rdquo; with the continuous development of concepts and applications, the voices of today's users for software applications are constantly increasing. How to ensure the most critical security check for users ldquo; cloud Vulnerabilities rdquo; fo

This article discusses attacks on the underlying network protocols and methods to prevent attacks, especially Routing and Routing Protocol vulnerabilities, such as Routing Information Protocol (RIP, Routing Information Protocol ), border Gateway Protocol (edge Gateway Protocol), Open Shortest Path First (OSPF, Open Shortest Path First Protocol), and so on. A vro plays a key role in each network. If a vro is damaged or a route is spoofed successfully,

Finally, it's okay. Just in case, give it to him again. Suddenly, the 360 prompt says there are system vulnerabilities. Open a look ...... Wow! 82 vulnerabilities, almost no fear. "Do you usually have no vulnerabilities? Have you ever had this prompt ?" I asked the monk. "Yes, but I don't know what this is, so I don't care ." Helpless ......, "A vulnerability

During the vulnerability debugging process, I personally feel that the most difficult is the IE browser and Flash Player vulnerabilities. Here we plan to record the learning experience (mainly based on the UAF class) to help new people learn.First of all, the difference between the IE vulnerability is that the program execution process is controlled by attackers. The JS script in POC reflects the C ++ code in mshtml, which determines the execution pro

, and so on, preventing attackers from using these error messages for some judgment. (8) It is recommended that some specialized SQL injection detection tools be used to detect and fix these SQL injection vulnerabilities before the website is published. Second, cross-site scripting vulnerability Cross-site scripting attacks (Cross-site scripting, often referred to as XSS) occur on the client side and can be used for attacks such as stealing priva

messages, such as type errors, field mismatches, etc., to prevent attackers from using these error messages to make some judgments.(8) Before the launch of the website, it is recommended to use some professional SQL injection detection tools to detect and timely repair these SQL injection vulnerabilities. second, cross-site Scripting vulnerabilityCross-site scripting attacks (Cross-site scripting, often referred to as XSS) occur on the client s

Of course, not all program code security vulnerabilities are attributed to Web server software. For example, if you are using a typical installation of Widows NT Option Pack 4.0, the installer will install exploration Air, which is a Web application program that is available to ASP programmers as an example. The showcode.asp file of widows NT Option Pack 4.0 will display the original program code of the Exploration Air sample site neatly. Since there

Two recent topics have attracted much attention, "haze, Wi-Fi security." A few decades of pollution have been recognized as the first documentary of The Big fire. Surprisingly similar to the day before the CCTV 315 party exposure wireless router to steal user account password, Wi-Fi security has gradually become a hot topic. Wi-Fi has been popular for nearly a decade, these wi-Fi vulnerabilities have been in existence for ten years, below to count th

iis| Security | security Vulnerabilities | solution Description of Windows 2003 Enterprise Edition IIS6 Directory Check Vulnerability 1, Windows 2003 Enterprise Edition is Microsoft's current mainstream server operating system. Windows 2003 IIS6 has a vulnerability to file resolution paths when the folder is named similar to hack. At the time of ASP (that is, the folder name looks like the filename of an ASP file), any type of file under this folder c

Helped a friend clean up a system leak in Z-blog today. In the morning, Ilmay sent mail to me, said he blog not to go, to my help, I went to see the page file was added to the iframe malicious Trojan virus, should be black, may be exploited in the system of a loophole. Because he's using Z-blog Plus, which is a bit like the z-blog I used, so I'm more interested in the flaw. After analyzing the IIS log files, I found the reason for the Ewebeditor editor is that there are significant

People have always thought that SEO optimization will only be related to the site itself and the quality of the chain, so the site security will not affect the site's SEO optimization, in fact, this idea is wrong. Site security is in fact closely related to SEO, especially in Baidu, Google has been the security of the site 2011. In fact, the narrow sense of the site is the site's vulnerability, the site is a flaw in the hardware, software or strategy, so that attackers can access the site withou

DNS is the abbreviation for the domain Name System. Everyone in the Internet input URL, is through the domain name resolution system to find the corresponding IP address to access the site. But the recent Microsoft Windows 2000 and Windows 2003 DNS services have a very high security vulnerabilities, if hackers successfully exploited, then our internet operation will encounter great trouble. Hacking expertise: Windows System Vulnerability Research Us