heartbleed vulnerability

For details about vulnerabilities and their hazards, refer to zhihu and wooyun's article. What is the impact of the OpenSSL Heartbleed vulnerability? Analysis on OpenSSL heartbleed Vulnerability The vulnerability-related code will not be analyzed. The above article has clear

on environment variables, such as CGI programs for Web applications. All the form data is transmitted to CGI programs by the web server process in the form of environment variables. Below is a simple CGI program written in C language. Int main (void){Char * data;Long m, n;Printf ("% s % c", "Content-Type: text/html; charset = gb2312", 13, 10 );Printf ("Printf ("Data = getenv ("QUERY_STRING ");If (data = NULL)Printf ("Else if (sscanf (data, "m = % ld n = % ld", m, n )! = 2)Printf ("ElsePrintf

PHP Common Vulnerability Attack analysis, PHP vulnerability attack Summary: PHP program is not impregnable, with the extensive use of PHP, some hackers are also in the absence of the trouble to find PHP, through the PHP program vulnerability to attack is one of them. In the section, we will analyze the security of PHP from the aspects of global variables, remote

The compound worm with the cursor vulnerability appeared in the Vista operating system and revealed the first major vulnerability. On July 6, March 30, Microsoft Vista operating system revealed the first major vulnerability. Yesterday, Rising anti-virus experts found that the vulnerability has been exploited by hacker

ShellShock: CVE-2014-6271 vulnerability and emergency repair methods About this vulnerabilityHello, a Linux security vulnerability was found to be more serious than "heartbleed", that is, the ShellShock: CVE-2014-6271 vulnerability, attackers can remotely execute arbitrary commands, full control of your server, A lower

. Check whether the vulnerability is fixed again. [Root @ mysql ~] # Env x = '() {:;}; echo vulnerable 'bash-c "echo this is a test"Bash: warning: x: ignoring function definition attemptBash: error importing function definition for 'X'This is a test[Root @ mysql ~] # 5. Final bash vulnerability repair (this method is correct) Vulnerability Detection command: env-

　　" Super Denial of service vulnerability " is an android generic denial of service vulnerability that could allow a malicious attacker to use this vulnerability to cause any app in the phone to crash and not work, almost affecting all Android devices currently on the market APP application. Vulnerability Analysis:　　0x

heartbeat requests, the load size is read from the attacker's controllable package. OpenSSL does not check the load size value, leading to out-of-bounds reading, resulting in sensitive information leakage.The leaked information may include the encrypted private key and other sensitive information such as the user name and password.Solution:============We recommend that you upgrade NSFOCUS to OpenSSL 1.0.1g. However, if you cannot install or upgrade the patch immediately, you can take the follow

Analysis of Common PHP vulnerability attacks and php vulnerability attacks Summary: PHP programs are not solid. With the widespread use of PHP, some hackers do not want to bother with PHP, and attacks by using PHP program vulnerabilities are one of them. In this section, we will analyze the security of PHP in terms of global variables, remote files, file uploads, library files, Session files, data types, an

Recently, Apache official release of Apache Struts 2.3.5–2.3.31 version and 2.5–2.5.10 version of the Remote Code execution Vulnerability (cnnvd-201703-152, cve-2017-5638) of the Emergency Vulnerability Bulletin. The vulnerability is because the exception handler for the upload function does not correctly handle user input error messages, causing a remote attacke

In the Web site program code security detection, Web site file Arbitrary view vulnerability in the entire site Security report is a relatively high-risk site vulnerability, the general website will contain this vulnerability, especially the platform, mall, interactive sites more, like the normal permissions bypass the vulnera