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- Heap_overflow abstract "A heap overflow is a type of buffer overflow that occurs in the heap data area. Heap overflows are exploitable in a different manner to that of stack-based overflows. Memory on the heap is dynamically allocated by the application at run-time and typically contains program data. Exploitation is performed by corrupting this data in specific ways to cause the application to overwrite internal structures such as linked list pointers. The canonical heap overflow technique overwrites dynamic memory allocation linkage (such as malloc meta data) and uses the resulting pointer exchange to overwrite a program function pointer.A typical example on older versions of Linux is two buffers allocated next to each other on the heap, writing beyond the boundary of the first buffer allows overwriting meta data in the second buffer. By setting the in-use bit to zero of the second buffer and setting the length to a small negative value which allows null bytes to be copied, when the program calls free() on the first buffer it will attempt to merge these two buffers into a single buffer. When this happens, the buffer that is assumed to be freed will be expected to hold two pointers FD and BK in the first 8 bytes of the formerly allocated buffer. BK gets written into FD and can be used to overwrite a pointer.".
- Heap_overflow wikiPageExternalLink MS04-028.mspx.
- Heap_overflow wikiPageExternalLink MallocMaleficarum.txt.
- Heap_overflow wikiPageExternalLink heap-corruption.html.
- Heap_overflow wikiPageExternalLink 74634.
- Heap_overflow wikiPageExternalLink article.
- Heap_overflow wikiPageExternalLink defeating-xpsp2-heap-protection.pdf.
- Heap_overflow wikiPageID "219328".
- Heap_overflow wikiPageLength "5174".
- Heap_overflow wikiPageOutDegree "24".
- Heap_overflow wikiPageRevisionID "675856945".
- Heap_overflow wikiPageWikiLink Address_space_layout_randomization.
- Heap_overflow wikiPageWikiLink Buffer_overflow.
- Heap_overflow wikiPageWikiLink Category:Computer_security_exploits.
- Heap_overflow wikiPageWikiLink Category:Software_anomalies.
- Heap_overflow wikiPageWikiLink Exploit_(computer_security).
- Heap_overflow wikiPageWikiLink GNU_C_Library.
- Heap_overflow wikiPageWikiLink Graphics_Device_Interface.
- Heap_overflow wikiPageWikiLink Heap_spraying.
- Heap_overflow wikiPageWikiLink IOS_jailbreaking.
- Heap_overflow wikiPageWikiLink JPEG.
- Heap_overflow wikiPageWikiLink Memory_management.
- Heap_overflow wikiPageWikiLink Memory_protection.
- Heap_overflow wikiPageWikiLink Microsoft.
- Heap_overflow wikiPageWikiLink NX_bit.
- Heap_overflow wikiPageWikiLink PaX.
- Heap_overflow wikiPageWikiLink Shellcode.
- Heap_overflow wikiPageWikiLink Stack_buffer_overflow.
- Heap_overflow wikiPageWikiLink Stack_overflow.
- Heap_overflow wikiPageWikiLink Windows_Server_2003.
- Heap_overflow wikiPageWikiLink Windows_XP.
- Heap_overflow wikiPageWikiLinkText "Heap overflow".
- Heap_overflow wikiPageWikiLinkText "heap buffer overflows".
- Heap_overflow wikiPageWikiLinkText "heap exploitation".
- Heap_overflow wikiPageWikiLinkText "heap overflow".
- Heap_overflow wikiPageWikiLinkText "heap".
- Heap_overflow wikiPageUsesTemplate Template:Citation_style.
- Heap_overflow wikiPageUsesTemplate Template:Reflist.
- Heap_overflow subject Category:Computer_security_exploits.
- Heap_overflow subject Category:Software_anomalies.
- Heap_overflow hypernym Overflow.
- Heap_overflow type Anomaly.
- Heap_overflow type Error.
- Heap_overflow type Exploit.
- Heap_overflow comment "A heap overflow is a type of buffer overflow that occurs in the heap data area. Heap overflows are exploitable in a different manner to that of stack-based overflows. Memory on the heap is dynamically allocated by the application at run-time and typically contains program data. Exploitation is performed by corrupting this data in specific ways to cause the application to overwrite internal structures such as linked list pointers.".
- Heap_overflow label "Heap overflow".
- Heap_overflow sameAs Q775289.
- Heap_overflow sameAs Přetečení_na_haldě.
- Heap_overflow sameAs Desbordamiento_de_montículo.
- Heap_overflow sameAs سرریز_هیپ.
- Heap_overflow sameAs Dépassement_de_tas.
- Heap_overflow sameAs Heap_overflow.
- Heap_overflow sameAs Przepełnienie_sterty.
- Heap_overflow sameAs Heap_overflow.
- Heap_overflow sameAs m.01g21g.
- Heap_overflow sameAs Q775289.
- Heap_overflow wasDerivedFrom Heap_overflow?oldid=675856945.
- Heap_overflow isPrimaryTopicOf Heap_overflow.