owasp web security

_file. = Directory_separator.MD5(uniqid() .$uploaded _name) . ‘.‘ .$uploaded _ext;......//Strip Any metadata, by re-encoding image (Note, using Php-imagick are recommended over PHP-GD) if($uploaded _type= = ' Image/jpeg ' ) { $img= Imagecreatefromjpeg ($uploaded _tmp ); Imagejpeg ($img,$temp _file, 100); } Else { $img= Imagecreatefrompng ($uploaded _tmp ); Imagepng ($img,$temp _file, 9); } Imagedestroy ($img ); //Can We move the file to the

-src cdn.example.com; report-uri /_/csp-reports", }}You can see from above that Blocked-uri gives a detailed block address http://example.com/css/style.css, but it is not always the case. For example, when attempting to load a CSS style from Http://anothercdn.example.com/stylesheet.css, the browser will not transmit the full path and will only give the http://anothercdn.example.com/address. This is done to prevent the leakage of sensitive information across domains.The server-side csp-report.ph

use the delay command to view the response speed (such as the ping 127.0.0.1-n 5 > nul or Sleep 5 under Linux under Windows) or to build the server to see if there is a request received (Ping under Windows, Telnet or Linux under the Wget,curl, etc.) method;7. Finally we look at the impossible level of command injection, found that the above method is not feasible, and the error message also changed:Error:you has entered an invalid IP. View the background code, found that the parameter IP is str

XSS: Cross site script attack, which we mentioned earlier, refers to an attacker entering (passing in) malicious HTML code into a Web site with an XSS vulnerability, and this HTML code executes automatically when other users browse the site. So as to achieve the purpose of the attack. For example, theft of user cookies, destruction of page structure, redirection to other websites, etc. In theory, there is an XSS vulnerability in which all input data i

1, Web Firewall products: Prevents Web page tampering and audit recovery from being passive, can block intrusion behavior is the active type, the IPS/UTM and other products mentioned above is a security universal gateway, there are special for the Web hardware security gate

It is said that when a PC (Windows system) on the Internet, if there is no anti-virus software firewall, then within 10 minutes will be the fall of the city of the virus. Why is it so? Because when you surf the Internet, maybe some sites will be implanted virus, a Trojan horse or something, the site's users as long as a landing, if there is no protection measures, then your machine will certainly be immediately captured. Of course, the site is not intentionally to hang virus and Trojan to the us

Zhou minyao Jin Li Sheng Yang qishou (College of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China) Abstract To:This article uses a variety of network security technologies to analyze the security risks of typical configurations (WIN 2000 SERVER + SQL + iis5.0) and propose corresponding countermeasures. Focuses on the security conf

believing that their applications will not be attacked or that they will not make mistakes. These ideas will lead to security issues. Developers should always imagine that their programs will be attacked and they will also make security mistakes. This idea helps developers avoid or reduce security risks and avoid losses to the company. Everyone will make mistake

relevant commands.DOS technique in 100 cases _w3cschool http://www.w3cschool.cn/dosmlxxsc1/cudkrf.htmlLinux Tutorials | Rookie Tutorial Http://www.runoob.com/linux/linux-tutorial.html!--about learning to knock more orders, play more. I decided to set up an Ubuntu and windows2012 to play, and I--!Linux learning almost, can play Kali Yo, yes!Xuan Soul Kali Link: https://pan.baidu.com/s/1ccTB7S password: bp4y(invalid words in contact me, I'm mending it)# # #第一部分都是基础, hit the country must have some

Preface I recently read Web intrusion Security Testing and countermeasures, and have gained a lot of inspiration. This book introduces a lot of Web intrusion ideas and well-known security sites outside China, which has broadened my horizons. Here, I have summarized the attack modes mentioned in the book again, and atta

key points to success or failure. Let's get down to the truth and continue with this topic. In the previous service framework work, Web Service support has become the focus of this period, from the initial stress testing, Java client compatibility testing. net, PHP client compatibility testing, WS-Security integration, and service framework support for Web serv

Original link: http://www.ibm.com/developerworks/cn/web/1012_weiqiang_webattack/ Introduction: WEB Security issues are often overlooked by programmers because they believe that there will be a professional operational staff or security Service team to help them find vulnerabilities and instruct them to modify them. An

EXP9 Web Security Foundation 0x0 Environment DescriptionFinally comes the web security direction, this is the course of the last experiment.I'm just a web-safe little white, not familiar with this area. I hope that through this experiment, I will learn about the basic vulner

Bkjia.com comprehensive report] Gartner recently published a survey showing that 75% of malicious attacks are targeted at Web applications, and only a few of them are targeted at the network layer. According to the survey data, nearly 2/3 of Web sites are quite vulnerable to different levels of malicious attacks. This means that the security defense of

As the most popular Web server platform, IIS plays a huge role. Therefore, it is particularly important to understand how to enhance the IIS security mechanism and establish a Web server with high security performance. Ensure system security Because IIS is built on the oper

contains sensitive dataq never directly store user-supplied (user-supplied) the arrayq careful use of serialization (serialization)q use local methods with caution (Native methods)q Clear Sensitive informationJava Safe anti-patternq ignoring those full-pattern code inadvertently creates a loophole.typical of Java Secure encoding anti-pattern (antipatterns):Ignore language features ( such as Integer overflow (Overflow))do not pay attention to using serialization , do not pay attention

Preface Recently read 《Web intrusion Security Testing and CountermeasuresAnd gained a lot of inspiration. This book introduces a lot of Web intrusion ideas and well-known security sites outside China, which has broadened my horizons. Here, I have summarized the attack modes mentioned in the book again, and attached som

Web application refers to the use of B/s architecture, through the HTTP/HTTPS protocol to provide services. With the wide use of the Internet, Web applications have been integrated into every aspect of daily life: online shopping, internet banking applications, securities stock trading, government administrative approval and so on. In these web accesses, most app

1:Content-Security-PolicyContent Security Policy is a new Security mechanism developed by Mozilla to improve browser Security. This mechanism allows websites to define Content Security policies and clearly inform browsers of which Content is legal, this allows the browser to

Related Settings for IIS: Delete the default established site virtual directory, stop the default Web site, delete the corresponding file directory c:inetpub, configure all the site's public settings, set the relevant number of connection limits, Other settings such as bandwidth settings and performance settings. Configures application mappings, removes all unnecessary application extensions, and retains only asp,php,cgi,pl,aspx application extension