| description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||||
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Learn more about: /HIGHENTROPYVA |
/HIGHENTROPYVA |
06/12/2018 |
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ef4b7c63-440d-40ca-b39d-edefb3217505 |
Specifies whether the executable image supports high-entropy 64-bit address space layout randomization (ASLR).
/HIGHENTROPYVA[:NO]
This option modifies the header of an executable image file (for example, a .dll or .exe file), to indicate support for 64-bit address ASLR. To have an effect, set the option on both the executable and all modules that it depends on. Then operating systems that support 64-bit ASLR can rebase the executable image's segments at load time by using randomized 64-bit virtual addresses. This large address space makes it more difficult for an attacker to guess the location of a particular memory region.
By default, the linker enables /HIGHENTROPYVA for 64-bit executable images. This option requires both /DYNAMICBASE and /LARGEADDRESSAWARE, which are also enabled by default for 64-bit images. /HIGHENTROPYVA isn't applicable to 32-bit executable images, where the option is ignored. To explicitly disable this option, use /HIGHENTROPYVA:NO.
EDITBIN Options
/DYNAMICBASE
/LARGEADDRESSAWARE
Windows ISV Software Security Defenses