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  • about buffer overflow

    - by Abed
    hello guys, I am new to the ethical hacking world, and one of the most important things is the stack overflow, anyway I coded a vulnerable C program which has a char name [400] statement, and when I try to run the program with 401A's it doesn't overflow, but the book which I am following says it must overflow and the logic sense says so, so what's wrong???

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  • Checking for underflow/overflow in C++?

    - by Legend
    Is there a general way to check for an overflow or an underflow of a given data type (uint32, int etc.)? I am doing something like this: uint32 a,b,c; ... //initialize a,b,c if(b < c) { a -= (c - b) } When I print a after some iterations, it displays a large number like: 4294963846.

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  • Buffer Overflow (vs) Buffer OverRun (vs) Stack Overflow [closed]

    - by joe
    Possible Duplicate: What is the difference between a stack overflow and buffer overflow ? What is the difference between Buffer Overflow and Buffer Overrun? What is the difference between Buffer Overrun and Stack Overflow? Please include code examples. I have looked at the terms in Wikipedia, but I am unable to match with programming in C or C++ or Java.

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  • CSS overflow: hidden; does not work

    - by kapil.israni
    Hi - I am having issues with overflow: hidden not working in my case. I have a div id=ticker which basically works like a scrolling ticker. something like this - http://www.tinymassive.com/ (whats happening section). So i am prepending dynamic content to div id=ticker The div id=ticker is contained in another div which is contained in another div, basically think of it like 4-5 level tree like structure body - div[id=wrapper] - div[class=main] - div[class=content] - div[class=frame] - div[class=bg] - div[class=primary-content] - div[id=ticker] Heres the css... #wrapper { width: 942px; margin: 0 auto; position:relative; overflow:hidden; } .main{ width:942px; margin:163px 0 0; overflow:hidden; } .content{ background:url(../images/content-bg.gif) repeat-y; overflow:hidden; width:662px; float:left; } .frame{ background:url(../images/frame-bg.gif) no-repeat 0 0; width:662px; } .bg{ background:url(../images/bg-bg.gif) no-repeat 0 100%; width:662px; overflow:hidden; } .primary-content{ padding: 12px 20px 40px 22px; width:620px; overflow:hidden; } #ticker { overflow: hidden; } Also if it helps - the ticker div contains a list of div[class=breadcrumps], which i am trying to scroll .breadcrumbs{ border-bottom:1px solid #ebebeb; padding:6px 0 6px 0; overflow:hidden; clear:both; } What i see is - when i prepend breadcrumps div to ticker, the page/ticker list keeps getting bigger :( Any help would be appreciated. Thanks.

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  • A lot of TCP: time wait bucket table overflow in CentOS 6

    - by divaka
    we have the following output from dmesg: __ratelimit: 33491 callbacks suppressed TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow TCP: time wait bucket table overflow Also we have the following setting: cat /proc/sys/net/ipv4/tcp_max_tw_buckets 524288 We are under some kind of attack, but we could not detect what cause this problem?

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  • Best way to detect integer overflow in C/C++

    - by Chris Johnson
    I was writing a program in C++ to find all solutions of a^b = c (a to the power of b), where a, b and c together use all the digits 0-9 exactly once. The program looped over values of a and b, and ran a digit-counting routine each time on a, b and a^b to check if the digits condition was satisfied. However, spurious solutions can be generated when a^b overflows the integer limit. I ended up checking for this using code like: unsigned long b, c, c_test; ... c_test=c*b; // Possible overflow if (c_test/b != c) {/* There has been an overflow*/} else c=c_test; // No overflow Is there a better way of testing for overflow? I know that some chips have an internal flag that is set when overflow occurs, but I've never seen it accessed through C or C++.

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  • Why does does my stack overflow error occur after 518669 specifically?

    - by David
    I created a java program to count up toward infinity: class up { public static void up (int n) { System.out.println (n) ; up (n+1) ; } public static void main (String[] arg) { up (1) ; } } i didn't actually expect it to get there but the thing that i noticed that was a bit curious was that it stopped at the same number each time: 518669 what is the significance of this number? (or of this number +1 i suppose). (also as a bit of an aside question, I've been told that the way i format my code is bad [indentation and such] what am i doing that isn't desirable?)

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  • SQL SERVER – Question to You – When to use Function and When to use Stored Procedure

    - by pinaldave
    This week has been very interesting week. I have asked few questions to users and have received remarkable participation on the subject. Q1) SQL SERVER – Puzzle – SELECT * vs SELECT COUNT(*) Q2) SQL SERVER – Puzzle – Statistics are not Updated but are Created Once Keeping the same spirit up, I am asking the third question over here. Q3) When to use User Defined Function and when to use Stored Procedure in your development? Personally, I believe that they are both different things - they cannot be compared. I can say, it will be like comparing apples and oranges. Each has its own unique use. However, they can be used interchangeably at many times and in real life (i.e., production environment). I have personally seen both of these being used interchangeably many times. This is the precise reason for asking this question. When do you use Function and when do you use Stored Procedure? What are Pros and Cons of each of them when used instead of each other? If you are going to answer that ‘To avoid repeating code, you use Function’ - please think harder! Stored procedure can do the same. In SQL Server Denali, even the stored procedure can return the result just like Function in SELECT statement; so if you are going to answer with ‘Function can be used in SELECT, whereas Stored Procedure cannot be used’ - again think harder! (link). Now, what do you say? I will post the answers of all the three questions with due credit next week. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, Readers Question, SQL, SQL Authority, SQL Function, SQL Puzzle, SQL Query, SQL Server, SQL Stored Procedure, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • SQL SERVER – Find Largest Supported DML Operation – Question to You

    - by pinaldave
    SQL Server is very big and it is not possible to know everything in SQL Server but we all keep learning. Recently I was going over the best practices of transactions log and I come across following statement. The log size must be at least twice the size of largest supported DML operation (using uncompressed data volumes). First of all I totally agree with this statement. However, here is my question – How do we measure the size of the largest supported DML operation? I welcome all the opinion and suggestions. I will combine the list and will share that with all of you with due credit. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Best Practices, Pinal Dave, Readers Contribution, Readers Question, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, SQLServer, T SQL, Technology

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  • Getting rid of scroll bar for position: absolute inside of position:relative inside of overflow:auto

    - by Marcos
    Hey guys, my first question here on stack overflow. Trying to get something pretty simple to work, I'm sure I'm missing something quite obvious. Still getting used to the "standard" css, too many years working with non-functional ones! Heh. So, sample of what I'm doing: <div style="overflow: auto; border: 1px solid"> hello <div style="position: relative; z-index: 99999; top: 0px; left: 0px;"> <div style="z-index: 99999; overflow-y: hidden; position: absolute; overflow: hidden; height: 200px; left: 0; auto: 0"> <ul> <li >New</li> <li >Old</li> </ul> </div> </div> </div> In essence: The first div is a container, that I would like to automatically overflow as content is added. Inside of that container, I have a popup menu, which I have simplified here. The popup menu appears (as it should) directly under "hello". My problem, however, is that instead of the popup menu "coming out" of the parent, as would be expected by the absolute position, it is actually causing a scrollbar to appear on the parent. I know that if I take otu the "position: relative" it works, but then it no longer appars where I want it (directly under the previous element). What am I missing here? EDIT: Sample here: http://marcos.metx.net/OverflowTest.htm

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  • performing simple stack overflow on Mac os 10.6

    - by REALFREE
    I'm trying to learn about stack base overflow and write a simple code to exploit stack. But somehow it doesn't work at all but showing only Abort trap on my machine (mac os leopard) I guess Mac os treats overflow differently, it won't allow me to overwrite memory through c code. for example, strcpy(buffer, input) // lets say char buffer[6] but input is 7 bytes on Linux machine, this code successfully overwrite next stack, but prevented on mac os (Abort trap) Anyone know how to perform a simple stack-base overflow on mac machine?

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  • performing simple buffer overflow on Mac os 10.6

    - by REALFREE
    I'm trying to learn about stack base overflow and write a simple code to exploit stack. But somehow it doesn't work at all but showing only Abort trap on my machine (mac os leopard) I guess Mac os treats overflow differently, it won't allow me to overwrite memory through c code. for example, strcpy(buffer, input) // lets say char buffer[6] but input is 7 bytes on Linux machine, this code successfully overwrite next stack, but prevented on mac os (Abort trap) Anyone know how to perform a simple stack-base overflow on mac machine?

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  • Vertical-centering and overflow Excel-style in CSS?

    - by Eric Grange
    Is there a way to perform a vertical centering of a variable-sized multi-line content within a fixed-size div, with hidden overflow? The aim would be to reproduce what you can see in Excel cells: when the content fits the container, it should be vertically centered, when it is larger, the parts that overflow should be hidden (and the content still vertically aligned), like in an Excel cell whose neighbours aren't empty. I know how to vertically center using CSS, I know how to hide overflow when the content isn't vertically centered, but I've no idea how to do both at the same time... Is Javascript the only answer? The trick is that CSS positioning approaches don't work with variable-sized content (my content is dynamic text), and when you use display:table-cell, it effectively disables CSS overflow control (and the container grows to accomodate the content).

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  • Is this possible? Overflow-y:visible with overflow-x:scroll/auto

    - by Kostrzak
    We have a problem in our team which we cannot solve :/ We made our own Grid control. When you click on the icon next to column name, the pop-up div (call it divFilter) appears and you can set filtering there. There can be dynamically generated div for each column so we can have f.e 5 divFilters in 5 different places. It works, but the only problem is that when there is for example 1-2 records on the Grid, the pop-up div will be displayed under horizontal scroll of div. We've tried with z-index but it looks like that won't work. We can set overflow:visible but we also need that horizontal scroll(our grids have up to 50 columns). We thought that we can solve it buy setting overflow-y visible and overflow-x:scroll but according to our tests and that page: http://www.brunildo.org/test/Overflowxy2.html it isn't possible(for IE7,IE8). I've also found this similar question CSS overflow-y:visible, overflow-x:scroll ,but our pop-up div must be position:absolute, because we need to position them under columns. Any ideas or workaround to it? Is it even possible to set it only with CSS without using Javascript(for dynamically changing gridview hight etc.). Thanks!!

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  • Stack overflow in xp cmd console

    - by Dave
    I am using an older program whose source code I cannot see. I am using the cmd.exe console in windows xp. The program ran with no problems on an xp machine last year, while a stack overflow code 2000 error was observed on a different xp machine (easy fix - use the machine that works). I tried running the program on the previously working machine lately, and now am getting the same error. No changes to the os were made and I did not change the service pack version. Any ideas on how to get around this stack overflow error so I can use the program? Dosbox will at least open the program, however it does not run to completion. Thanks!

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  • test questiontest question test question test question? [closed]

    - by user365217
    TestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestionTestQuestion

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  • error of integer overflow

    - by user308565
    This the part of my OpenGL code, I am getting an error for : struct Ball { float x; float y; float rot; float dir; bool rmv; Ball* next; }; Ball* curBall; void addBall() { if (balls==NULL) { balls=new Ball; balls->next=NULL; curBall=balls; } else { curBall->next=new Ball; curBall=curBall->next; curBall->next=NULL; } curBall->x=((float)rand()/(float)(RAND_MAX+1))*(ww-1) +1; curBall->y=((float)rand()/(float)(RAND_MAX+1))*(wh-1) +1; curBall->dir=((float)rand()/(float)(RAND_MAX+1))*(2*PI-1) +1; curBall->rot=((float)rand()/(float)(RAND_MAX+1))*(359) +1; curBall->rmv=false; } error : In function ‘void addBall()’: file.cpp:120: warning: integer overflow in expression file.cpp:121: warning: integer overflow in expression file.cpp:122: warning: integer overflow in expression file.cpp:123: warning: integer overflow in expression

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  • set overflow hidden in some cases

    - by Richard
    Hello, my question is How can I set overflow hidden in cases where the html go's outside the screen Right now I have set html {overflow: hidden;} in the head tag off the page. So, it's hidden all the time In my particular case the errors that I show in the registration process cannot be seen on my 13inch laptop, but I don't want to show the scrollbars all the time. That's why I want it to set(or unset) based on the fact if there is overflow or not. What would be the best way? thanks, Richard

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  • Overflow issue in IE 7

    - by Spencer Carnage
    I need some help with CSS overflow in IE, namely IE 7. I want the nested div content to be hidden. <div style="width:100px; height:100px; overflow:hidden; border:1px dashed red;"> <div style="width:60px; left:80px; position:relative;">hidden stuff goes here</div> </div> It works fine in FF but in IE 7, the overflow content is not hidden.

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  • Make overflow hidden when shrinking div

    - by johnnietheblack
    I have a div with an image in it, and the image is too large for the div. I have solved the overflow problem with the obvious CSS overflow:hidden trick. But, the problem is that when the div's parent resizes (shrinks), the div holding the image won't shrink because of the image in it. Is there a way to have a resizable div with an image in it (almost like a background image) that overflows? MY DIV STRUCTURE: <div id="parent"> <div id="image_holder"> <!-- this image will inevitably be larger than its parent div --> <img src="too_big_for_div.jpg" /> </div> </div> MY CSS: #parent { width:100%;} #image_holder { width:100%; overflow:hidden;} The #image_holder div will not resize to a smaller dimension now. Any ideas?

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  • overflow hidden not working on touch device

    - by Jesper Ong
    I have a problem with overflow:hidden on a touch device. Basically I have my html and body on overflow:hidden. With a contact form outside(bottom) of the window. On clicking a button this form will animate in. This is so far working great on desktop browsers. But on touch devices, I seem to be able to scroll down and view the form. I can't seem to find solutions after much googling. Is there anyway to force overflow:hidden on touch devices? Any help much appreciated!

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  • CSS overflow and word-wrap behaviour not helping me at all

    - by henriquev
    You can see how the filename field should look at http://www.plifk.com/henvic/114 and how it breaks the layout at http://www.plifk.com/henvic/159 If I used 108574main-neutron-star-and-a-very-bad-overfow-will-happen-here-so-sad.mpg I would not get an overflow, but in the first line "108574main-neutron-star-and-a-very-" and in the second line a "bad-overfow-happens.mpg". What can I do to avoid getting an overflow? Please know that I don't want to use quirks (like PHP's wordwrap, neither JavaScript if possible) and I've tried some ways in CSS with word-wrap, etc, but nothing worked out. I've also tried word-break: break-all (tested on Firefox only) but it didn't work also. Even the overflow: hidden; is not working... I'm not very familiar with web designing (indeed I try to do everything by the standards, etc) and I'm completely lost right now. The uncompressed CSS file can be seen at http://pastebin.ca/1802451 Now... I really understand that this is expected once the word-wrap is supposed for text, not characters. But hey, even with break-all it doesn't do anything. How can? Thank you very much in advance.

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  • jQuery datepicker causes page overflow

    - by nc3b
    I am using the datepicker control from jQuery-ui 1.8. from-date is a text input. I am attaching a very simple datepicker: $('#from-date').datepicker(); This causes the page to overflow (vertical scrollbar), which I am trying to avoid. As soon as I click the from-date, the datepicker control appears, and the scrollbar dissapears. After dismissing the datepicker, the scrollbar doesn't appear anymore. The text field is inside a div that has overflow:auto and a fixed height and width. I suspect it's a z-index issue. What am I doing wrong ? How would I debug this ?

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  • Stack overflow in xp cmd console

    - by Dave
    I am using an older program whose source code I cannot see. I am using the cmd.exe console in windows xp. The program ran with no problems on an xp machine last year, while a stack overflow code 2000 error was observed on a different xp machine (easy fix - use the machine that works). I tried running the program on the previously working machine lately, and now am getting the same error. No changes to the os were made and I did not change the service pack version. Any ideas on how to get around this stack overflow error so I can use the program? Dosbox will at least open the program, however it does not run to completion. Thanks!

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