heartbleed

acceleration scenarios There are two main types of TLS hardware acceleration scenarios that are commonly used today:1. SSL dedicated accelerator card.2. GPU SSL acceleration.The main usage of the above two scenarios is to insert hardware into the server's PCI slots, and the hardware performs the most consumed performance calculations. However, such a scenario has the following drawbacks:1. Support algorithms are limited. For example, ECC is not supported, GCM is not supported, etc.2. High cost

0x00 background Two days ago, the heartbleed fat man published an article about NTP-based reflection and amplification attacks. I wrote another article related to NTP because I didn't mention some of the above, or I didn't make it clear enough. You are welcome to leave a comment and I will try again for improvement. Glossary: Ntp server: the ntp server that synchronizes with the atomic clock or uses itself as the standard time. Ntp relay server: C

that an active network attacker can change the parameters in the message and the signature is still valid [for example, changing the execute_php_code message to execute arbitrary code]. For protection, MAC should contain the entire message. [Note: The MD5-based message digest is backward. If possible, these plug-ins use openssl_verify (); * ** the Openssl 1.0.f heartbleed vulnerability announced on February 4, is a century-level vulnerability. **] Wo

(s ); S-> tlsext_hb_seq ++; S-> tlsext_hb_pending = 0; } } Return 0; } The logic here is that the actual length of the data in the request packet is much smaller than the indicated length. The Server allocates a heap according to the indicated length, then we try to copy all the data in the request packet to form a response packet, So we copied the length bytes from the data in the request packet in the memory, it has far exceeded the actual length of the data, resulting in data

Reference to:http://www.freebuf.com/tools/50324.htmlFrom serious Heartbleed vulnerabilities to Apple's gotofail vulnerabilities, to the recent SSL V3 poodle vulnerabilities ... We have seen the huge disaster caused by the vulnerability of network traffic. So "valley Man" came! Google has recently developed a tool,--nogotofail, that can help developers detect security breaches in network traffic classes.Keep all networked devices protected from TLS and

. Instrumentation also ensures that the configuration files are properly protected. More sophisticated instrumentation can pinpoint complex security vulnerabilities and almost anything you want to know about your enterprise code base. It also continues to apply to the size of the enterprise.Trying to find out which applications to protect first will only waste resources. Instead, take the time to build your security instrumentation capabilities. You don't need to scan anything after the next

other services, especially what resources will be crawled according to user input services An ancient SQL injection Shameless phishing services, DNS fraud Involving the HTML, but also to consider the cross-site ... Even if you do it seamlessly, consider that teammates sometimes drop the chain: GLIBC, OpenSSL these underlying libraries can also be exploited, see: Heartbleed Other services on the same host are compromised

Microsoft Open Source Checked C, this is a C language extension version, can be used to solve the C language of a series of security-related pitfalls. As the name suggests, Checked C adds a check to the C language, which can help developers check for common programming errors such as buffer overruns, memory overrun, incorrect type conversions, and so on. These programming errors are often the root cause of many major security breaches, such as shell-breaking vulnerability shellshock, heart Bleed

never used it myself. My introduction to it is also obtained from its official website and heartbleed blog. 5. Client prototype GUI Design Studio You can use axure and balsamiq mockups to easily draw a Web-based prototype, but what if the object is a client software? Is axure preferred? Maybe you are familiar with axure now, but I strongly recommend that you use the GUI Studio software. I will explain it in a few minutes,I paid attention to some o

...... Milai's classic line-playful Article 1. You are not allowed to take photos with other girls. I am your girlfriend! 2. The school flower is in your arms. 3. Clean the human model and dog to work! 4. Yang Xiaoyun's taste. I tell you, if you give her 30 thousand, she will show you the effect of 100,000. But if you give her 0.3 million, the effect is still 100,000. 5. If the two of us go swimming, will they swim or watch our games. 6. As soon as the girl becomes a girl, she becomes a single

library is up-to-date and that there are no known security vulnerabilities. Instrumentation also ensures that the configuration files are properly protected. More sophisticated instrumentation can pinpoint complex security vulnerabilities and almost anything you want to know about your enterprise code base. It also continues to apply to the size of the enterprise.Trying to find out which applications to protect first will only waste resources. Instead, take the time to build your security instr

ensures that the configuration files are properly protected. More sophisticated instrumentation can pinpoint complex security vulnerabilities and almost anything you want to know about your enterprise code base. It also continues to apply to the size of the enterprise.Trying to find out which applications to protect first will only waste resources. Instead, take the time to build your security instrumentation capabilities. You don't need to scan anything after the next

Doll, vice president of GITHUB strategy at the open source hosting platform, says the opposite is true, open source software not only allows users to evaluate the code, but also evaluates the developer, when the user reads the code, discovers the problem, keeps up reporting, and understands the overall temperament of the community. You can also rely on peers to review their software. "This relationship between project users and project contributors enables users and businesses to discover talen

1. Profound insights.Everyone should have a ambitious goal, but this is not the case in reality. Because the gap between reality and ideal is too far away, many people give up their temples. Without one step at a time to climb the peak, just standing in the same place. Gradually lost in the vast sea of people, could not find their own high tower. Some people succeed because they stick to their ideals and never give up at any time. Therefore, when writing an article, we also need to have a very d

attacks, such as the maximum number of processes and memory usage.You can add the following lines in/etc/security/limits. conf: *softcore0*softnproc2048*hardnproc16384*softnofile1024*hardnofile65536 Core 0 indicates that you cannot create a core file. Nproc 128 limits the maximum number of processes to 20 Nofile 64 indicates that the maximum number of files simultaneously opened by a user is 64 * Indicates all users logged on to the system, excluding the root user. Then, you must edit the

Red Hat finds a security vulnerability named bash bug in bash shell. When a user accesses the vulnerability normally, the vulnerability allows attackers to execute code like in shell, this opens the door for various attacks. It is reported that its severity exceeds the previous "heartbleed" vulnerability. Detection Method $ env x=‘() { :;}; echo vulnerable‘ bash -c "echo this is a test" If the following content is returned: upgrade as soon as possib

, saving half of the country. Looking at the future of founder Zheng: 10 academicians + 100 large funds + the world's top 500, are there any ambitions to occupy 90% of the world's typographical market? Do you have the courage to go public in the United States and speak with Microsoft? Is the USD or RMB included in the 100 largest funds? If you just make your own money to make a fortune 500 in the world, it doesn't seem very interesting. Nothing can be done but unexpected things. What is

Ah, I despise 360 here. I was really angry yesterday! After sending a sample to him for two days, he replied that he could scan and kill 360. After installing hundreds of megabytes of 360 antivirus code, I felt so sad! The infected file is deleted directly! It's speechless. I know that all my EXE files have been infected. Are you sure you want to delete them ?!, If I want to delete a batch, it will take two days for a signature to be extracted ?! Heartbleed