heap overflow tutorial

Reprinted from HTTPS://GITHUB.COM/PZXWHC/MINEKNOWCONTAINER/ISSUES/25Including:1. Stack Overflow (stackoverflowerror)2. Heap overflow (Outofmemoryerror:java heap space)3. Permanent generation overflow (outofmemoryerror:permgen space)4. Outofmemoryerror:unable to create native

Idea VM parameter settings 　　 Stack overflow (in fact, recursive call is not finished) Public static void StackOverflow () { stackoverflow (); } Heap Overflow Static class testbean{} /** * heap overflow Java

Heap Overflow : Copy Code code as follows: /** * @author Lxa * Heap Overflow */ public class Heap { public static void Main (string[] args) { ArrayList list=new ArrayList (); while (true) { List.add (New

:-xms128m-xmx256m-xx:permsize=128m-xx:maxnewsize=256m-xx:maxpermsize=256mor manually set the MaxPermSize size, such as Tomcat,To modify the Tomcat_home/bin/catalina.bat, add the following line above the echo "Using catalina_base: $CATALINA _base":Java_opts= "-server-xx:permsize=64m-xx:maxpermsize=128mRecommendation: Move the same third-party jar files to the Tomcat/shared/lib directory, which reduces the memory consumption of the jar document"Reprint" Java project frequently encountered memory

garbage collection before the snapshot, the remainder will be all objects referenced by the application, and a comparison of two snapshots will accurately identify the newly created objects that remain in the application.Based on your understanding of the application, determine which objects are inadvertently holding object references in two snapshot comparisons.Trace leading references to find which objects are referencing these unintentional persisted objects until you find the source object

System CentOS6.4 Yum installed Tomcat6 and jdk1.6, the installation configuration process is as follows: Http://www.111cn.net/sys/CentOS/72007.htm The deployment of two projects A and B in Tomcat, as well as the time of memory overflow error in the deployment times, the system CPU load is soaring, and a, B, and only multiple a, or just multiple B-project systems are deployed separately for normal operation. View Log error: Outofmemoryerror:permgen

Starting today, I will send 5 small series about Java virtual machines: "Heap overflow processing" in one of the actual Java virtual machines Virtual machine working mode for Java Virtual machine The three "G1 of the New generation GC" of Java Virtual machine Live Java Virtual machine Four "Disable System.GC ()" Real-time Java Virtual Machine Five "turn on JIT compilation" Let'

Heap overflow is related to the heap's memory layout, and to understand heap overflow, it is first to be clear what the heap memory layout of malloc () is, and what it will look like after the free () operation.Solve the first problem: How to lay out the

Starting today, I will send 5 small series about Java virtual machines: "Heap overflow processing" in one of the actual Java virtual machines Virtual machine working mode for Java Virtual machine The three "G1 of the New generation GC" of Java Virtual machine Live Java Virtual machine Four "Disable System.GC ()" Real-time Java Virtual Machine Five "turn on JIT compilation" Let'

Let's look at the Java heap:For the allocation of the Java memory area, you can view an article in the Java Runtime data region.The Java heap is the largest chunk of virtual machine memory management, which is thread-shared, and all threads in a Java process can access the data in that zone. Most areas of the Java heap are stored instance objects, which we often call objects in Java object-oriented programm

look at how to set the DND/CP protocol to version 3 and send the following RPCI commands in turn:tools.capability.dnd_version 3 tools.capability.copypaste_version 3 vmx.capability.dnd_version vmx.capability.copypaste_version The first two lines of messages have the DnD and Copy/paste versions set up, and the next two lines are used to query the version, which is necessary because only the query version will actually trigger the version switch. The RPCI command vmx.capability.dnd_version che

Summary three methods of using heap overflow in Windows Creation Time:Article attributes: ReprintedArticle submitted: watercloud (watercloud_at_xfocus.org) The original article was published by Leven in the network programming version:Https://www.xfocus.net/bbs/index.php? Act = se F = 3 t = 34455 P = 122380 Summary three methods of using heap

0x00 Overview This article starts from the program instance and shows the heap overflow + code execution under XP SP1, heap overflow under XP SP3 + arbitrary memory write, mainly for {I have mastered the buffer overflow principle, beginners who want to learn more about the

QEMU Heap Buffer Overflow Vulnerability (CVE-2015-5225)QEMU Heap Buffer Overflow Vulnerability (CVE-2015-5225) Release date:Updated on:Affected Systems: QEMU Description: Bugtraq id: 76506CVE (CAN) ID: CVE-2015-5225QEMU is an open source simulator software.Qemu vnc shows that the driver has a

QEMU pcnet_receive Heap Buffer Overflow Vulnerability (CVE-2015-7504)QEMU pcnet_receive Heap Buffer Overflow Vulnerability (CVE-2015-7504) Release date:Updated on:Affected Systems: QEMU Description: CVE (CAN) ID: CVE-2015-7504QEMU is an open source simulator software.The Qemu of the amd pc-Net II Ethernet Control

One of the actual Java virtual machines is "Heap Overflow processing ". From today on, I will publish five small series about Java virtual machines: One of the actual Java virtual machines is "Heap Overflow processing" Practice: Java Virtual Machine 2 "virtual machine working mode" Java Virtual Machine 3: New Gener

Starting today, I will send 5 small series about Java virtual machines: actual Java Virtual machine one" heap overflow processing " actual Java Virtual machine two" virtual machine working mode " actual Java Virtual Machine three" G1 of the New generation GC " actual Java Virtual Machine four" Disable System.GC () " Practical Java Virtual Machine Five" turn on JIT compilation

Starting today, I will send 5 small series about Java virtual machines: "Heap overflow processing" in one of the actual Java virtual machines Virtual machine working mode for Java Virtual machine The three "G1 of the New generation GC" of Java Virtual machine Live Java Virtual machine Four "Disable System.GC ()" Real-time Java Virtual Machine Five "turn on JIT compilation" Let'

Qemu pcnet controller heap buffer overflow Arbitrary Code Execution Vulnerability (CVE-2015-3209)Qemu pcnet controller heap buffer overflow Arbitrary Code Execution Vulnerability (CVE-2015-3209) Release date:Updated on:Affected Systems: QEMU Description: CVE (CAN) ID: CVE-2015-3209QEMU is an open source simulator

Exploitation of Linux heap overflow exploits unlinkTake a bit @ Ali Poly Security0 PrefaceBefore we learned more about the operating mechanism of GLIBC malloc (see article link for the end ), Let's start with a real heap overflow exploit. To tell the truth, write this kind of article, I am more counseling, because I am