vulnerability could result in remote code execution, which could allow an attacker to gain full control of the system.Proof of vulnerabilityIn our tests, we wrote a POC, and when we sent a well-structured email to the server, we were able to get the shell of the remote Linux server, bypassing all the protections currently on 32-bit and 64-bit systems (such as Aslr,pie and NX).What can we do?Patching the operating system in time, we (Qualys) have work
* () function to initiate a DNS request that converts the host name to an IP address.Vulnerability HazardThis vulnerability could result in remote code execution, which could allow an attacker to gain full control of the system.Proof of vulnerabilityIn our tests, we wrote a POC, and when we sent a well-structured email to the server, we were able to get the shell of the remote Linux server, bypassing all the protections currently on 32-bit and 64-bit systems (such as Aslr,pie and NX).What can we
vulnerabilities is usually from the cvss points of view. Although Cvss has a significant effect in terms of rapid vulnerability prioritization and screening vulnerabilities, the sorting speed is often based on the circumstances in which the enterprise has localized its configuration.
Cvss is a powerful monitoring tool, but all the metrics relied on to score are very general. In order to achieve the highest monitoring efficiency, it is necessary to localize the CVSS to a specific environment. B
to HT TPS to keep everyone safe on the web.LockIn the coming weeks, we'll publish detailed best practices (we'll add a link to it from here) to make TLS adoption easier, And to avoid common mistakes. Here is some basic tips to get started:Decide the kind of certificate you need:single, multi-domain, or wildcard certificateUse 2048-bit key certificatesUse relative URLs for resources this reside on the same secure domainUse protocol relative URLs for all other domainsCheck out We Site move articl
OpenSMTPD bug found LibreSSL Vulnerability
Qualys researchers want to see If OpenSMTPD (open-source SMTP protocol implementation) has a remote code execution vulnerability and cannot be found, so they want to check the library file's C Function malloc () s and free () s, results of a memory overflow (CVE-2015-5333) and a Buffer Overflow Vulnerability (CVE-2015-5334) found in OpenSSL alternative LibreSSL ). The LibreSSL team has released the fix.
Ope
Red Hat Linux fixes vulnerabilities in the "libuser" Library
Red Hat has fixed two vulnerabilities in the "libuser" library, which can be exploited by a local attacker to escalate permissions to the root user.
The libuser Library provides an interface for operating and managing users and group accounts. This software package is installed in Red Hat Enterprise Linux (RHEL) by default, while other Linux distributions come from the Red Hat code library.
The vulnerability was discovered by
Google will improve the ranking of HTTPSSSL websites. How can we make websites correctly use the SSL security protocol? Google provides several suggestions.
Google will improve the ranking of websites using HTTPS/SSL,How can I make websites correctly use the SSL security protocol? Google provides several suggestions.
Select the type of certificate you need: single domain, multi-domain, General Certificate
Use a 2048-bit encrypted Certificate
Use relative URLs for resources under the same securi
Security Standard (pci dss) requires regular vulnerability assessment on the card processing system. Automation is the only practical way to meet this requirement. However, automation is not a panacea for PCI compliance. The standard acknowledges: "penetration testing is usually a highly manual replacement process. Although some automation tools can be used, testers need to use their system knowledge to penetrate into the environment ."
Select your toolsetThe penetration tester's Toolkit should
In recent years, I have written many articles about HTTPS and HTTP/2, covering all aspects of certificate applications, Nginx compilation and configuration, and performance optimization. In the comments of these articles, a lot of readers raised a variety of questions, my mailbox also often received similar mail. This article is used to list some of the issues that are representative and I know the solution.In order to control the length, this article as far as possible only to give the conclusi
modified, starting with 1.3. version1.3 (17september2013) Thefollowingchangesweremadeinthisversion:?recommend Replacing1024-bitcertificatesstraightaway.? recommendagainstsupportingsslv3.? removetherecommendationtouserc4tomitigatethebeast attackserver-side.? recommendthatrc4isdisabled.? recommendthat3desisdisabledinthenearfuture.? WarnabouttheCRIMEattackvariations (Timeandbreach).? recommendsupportingforwardsecrecy.? adddiscussionofecdsacertificates. Thanks for the valuable feedback and the draf
How to Set HTTPS policies for old browsers
A few days ago, a friend asked me: we all said we recommend using the Qualys SSL Labs tool to test SSL security. Why are some of the most powerful Security manufacturers having low scores? I think this problem should be resolved in two aspects:The situation of domestic user terminals is complex. In many cases, the SSL security configuration is reduced to be compatible with more users. There are indeed some la
BKJIA May 8 Internet headlines] generally, as long as a software company releases patches for its own products, we should actively deploy them as they are of great significance for fixing vulnerabilities. However, sometimes the patch is not a real patch, but the configuration is changed.
Take the patch that Oracle released earlier last week as an example. According to Qualys security product companies, this patch is designed for numbering CVE-201-1675
Google adjusts the search engine algorithm: HTTPS websites rank higher
Google posted an announcement on its official blog that it has adjusted its search engine algorithm. websites using HTTPS encryption will rank higher in the search results.
Google said it has tested whether the target website uses the Security Layer in the past few months. The goal is to encourage websites around the world to adopt HTTPS with higher security to ensure visitor security. Google said in its blog that secur
Vulnerability Hazard :"CVE 2015-0235:gnu glibc gethostbyname buffer Overflow Vulnerability" is a full-blown outbreak that resulted in the discovery of a glibc in the GNU C library (__nss_hostname) when Qualys company was conducting internal code audits The _digits_dots function caused a buffer overflow vulnerability. This bug can be triggered by the gethostbyname * () function, both locally and remotely. The vulnerability (Ghost vulnerability) caused
Original linkLinux, BSD, Solaris, and other open-source systems are susceptible to a local privilege escalation vulnerability, "Stack clash," which can be exploited by attackers to smash Linux defenses and gain root privileges to execute code, according to security vendor Qualys researchers.Qualys that the high-risk vulnerability exists on the stack, bypassing the Stack guard page mitigations introduced in Linux in 2010 and into the memory area, which
installing the vsphere Client or vsphere powercli, upgrade the Windows operating system on the host oWS Vista or later.
On the VCenter Server 5.5 host machine, modify the vpxd.cfg -to-reduce the implied security by allowing the server To communicate using weak cipher suites:For windows-based VCenter Server
Connect to the VCenter Server using RDP.
Navigate to the directory:C:\ProgramData\VMware\VMware Virtualcenter\
Backup the vpxd.cfg file. Do not skip this step.
Open th
In encapsulation and interfaces, the private keyword encapsulates an internal member of an object. Encapsulated, the product hides the internal details and is provided only to the user interface (interface). Interfaces are very useful concepts that can assist in our abstract thinking. In real life, when we think of an appliance, we often think of the functional interface of the appliance. For example cups,
at the end of 2013, it further expands the comprehensive portfolio of Oracle products in application, social networking, platform and infrastructure services. At the same time, Oracle recently released a series of cloud-oriented Database and software integration products, including Oracle Database 12c) oracle SuperCluster M6-32 Integration System Oracle SuperCluster M6-32 Engineered System), Oracle Virtual computing device Oracle Virtual Compute Appliance
virtual device is a pre-configured virtual environment that minimizes the work required for normal operation. You do not need to install the operating system, install software, and execute software configurations in this environment. It is pre-configured and can be used at any time. IBM DB2 Enterprise 10.1 Trial Virtual Appliance can run locally on the host computer Through VMware Workstation/Player, or remotely in a VMware vSphere environment. After
The command pattern emphasizes the encapsulation call , which encapsulates the method invocation. By encapsulating the method call, we can encapsulate the operation block, so the object that calls the operation does not need to be concerned about how things work, they just need to know how to use the wrapping method to do it. By encapsulating the method call, we can also do some very clever things, such as logging, or reusing these packages to implement revocation.We use the following example to
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