xss injection prevention

CnCxzSecs Blog Brief description:Discuz! 7.2/X1 mood wall plug-in SQL injection and persistent XSS vulnerabilities.SQL injection is quite bad, and GPC is required to be off (currently, such websites are almost out of print)Because XSS is persistent, It is triggered as long as the administrator opens the application. Ho

Recently, DiscuzX2 was revealed to have two 0day vulnerabilities, one being the SQL injection vulnerability. Attackers can exploit this vulnerability to obtain the user name and password, and the other being the XSS injection vulnerability, attackers can conduct website Trojans, phishing, and other activities. Currently, the official version 0629 has been release

For:-XSS (Cross site script, multi-site scripting attack) is an attack that injects malicious script into a Web page to execute malicious script in the user's browser when the user browses the Web page. There are two types of cross-site scripting attacks: A reflective attack that convinces a user to click on a link that embeds a malicious script to reach the target of an attack, and there are many attackers who use forums, tweets to publish URLs conta

Vulnerabilities are just a few categories, XSS, SQL injection, command execution, upload vulnerabilities, local inclusion, remote inclusion, permission bypass, information disclosure, cookie forgery, CSRF (Cross station request), and so on. These vulnerabilities are not just for the PHP language, this article simply describes how PHP effectively protects against these vulnerabilities. 1.

%0a1,2,3/*uyg.php?id=1/**/union%a0select/**/1,pass,3 ' A ' from ' users 'Uyg.php?id= (0) union (SELECT (TABLE_SCHEMA), TABLE_NAME, (0) from (information_schema.tables) have ((Table_schema) Like (0x74657374) (table_name)! = (0x7573657273))) #Uyg.php?id=union (select (version ()))--uyg.php?id=123/*! UNION ALL Select version () */--Uyg.php?id=123/*!or*/1=1;uyg.php?id=1+union+select+1,2,3/*uyg.php?id=1+union+select+1,2,3--uyg.php?id=1+union+select+1,2,3#uyg.php?id=1+union+select+1,2,3;%0 0Uyg.php?i

A functional point of SQL injection and storage XSS contains a variety of techniques. I think I am an artist ~~ Ecshop V2.7.3 just now ~ 1. the vulnerability exists in the out-of-site ad statistics function (corresponding to the report statistics in the management background-> JS serving outside the site), that is,/affiche. on the php page, the from parameter (website source referer) is stored in the databa

, 20 ); 9 .} 10. echo json_encode ($ app_list ['LIST']); 11. exit; 12 .} else {13. exit; 14 .} 15 .} IF $ _ GET ['q'] is not empty and $ _ GET ['tpl '] is empty, this IF is entered because the parameters we searched for are as follows :? Tpl = search q = 'sd, so this if is not entered. In this if statement, trim ($ _ GET ['q']) is directly included in the select statement, resulting in injection. Use exp: index.php?q=xxoo'union select 1,uname,upas

SQL Injection and XSS vulnerabilities in a website of Dangdang Love.dangdang.com is a literary page... however, SQL injection and XSS exist, and the database management account is dba without a password .... SQL Injection: sqlmap-u "http://love.dangdang.com/mg.php/main/add

This article illustrates the YII framework's approach to preventing SQL injection, XSS attacks, and csrf attacks. Share to everyone for your reference, specific as follows: The methods commonly used in PHP are: /* Anti-SQL injection, XSS attack (1)/function Actionclean ($str) {$str =trim ($STR); $str =strip_t

Tags: Post method doc ICA input sel array CTI strong detailsXSS filteringThe input class can automatically filter the input data to prevent cross-site scripting attacks. If you want to automatically run the filter every time you encounter POST or COOKIE data, you can set the following parameters in the application/config/config.php configuration file: $config[' global_xss_filtering 'TRUE; Or if the second parameter of the Get and post methods is set to True automatically, the input parameters

Significance of six: 1. permission restrictions are always reassuring, such as backend and Intranet ..... In addition, some programs officially deny the danger of background vulnerabilities. For example, * vbbs's attitude towards the previous data backup to get shell. Indeed, such a vulnerability is hard to be exploited directly due to permission restrictions. Like the above situation, XSS is often ignored by programmers, and it is not very easy to de

403 Request Denied with special charactersWhite list rule syntax:Basicrule wl:id [Negative] [mz:[$URL: target_url]|[ match_zone]| [$ARGS _var:varname]| [$BODY _vars:varname]| [$HEADERS _var:varname]| [NAME]]Wl:id (white list ID) which interception rules will go to whitelistwl:0: Add all the interception rules to whitelistWl:42: Whitelist the interception rule with ID 42Wl:42,41,43: Whitelist the interception rules with IDs 42, 41, and 43WL:-42: Add all interception rules to whitelist except for

XSS injection is a very common problem, but it is not difficult to solve it, but there are many things to be aware of. Here is a complete solution.A common solution in Java is to inherit HttpServletRequestWrapper and then reload methods such as getParameter and getHeader. However, it should be noted that the file upload does not go through HttpServletRequestWrapper, and all

[Switch] HttpServletRequestWrapper implements xss injection,Here we talk about our solutions in the recent project, mainly using the org. apache. commons. lang3.StringEscapeUtils. escapeHtml4 () method of the commons-lang3-3.1.jar package. The solution mainly involves two steps: user input and display output: special characters such as The XssFilter implementation method is to implement the servlet

Use jquery encoder to solve the problem caused by XSS Script Injection, jqueryxss Symptom: the front-end receives a data (including html) tag in the background, automatically translates the tag into html page elements, and runs the script automatically, resulting in blocking of the front-end page. The following code contains a large number of duplicated background data: I learned about this

Symptom: The front end receives a background data (which contains HTML) tags, automatically translates into HTML page elements, and automatically executes the script, causing the front page blockingThe received background data is a large number of duplicates of the following code Script > alert ("1"); Script > Button >I am butbutton>I was aware of the XSS attack at this point.But what is XSS attack? Degre

Mysql_real_escape_string () So the SQL statement has a similar wording: "SELECT * from CDR where src =". $userId; Change to $userId =mysql_real_escape_string ($userId) All printed statements, such as Echo,print, should be filtered using htmlentities () before printing, which prevents XSS, note that the Chinese will write Htmlentities ($name, ent_noquotes,gb2312). Here are two simple ways to prevent SQL injection