Ashlar Vellum Graphite 安全漏洞

Ashlar Vellum Graphite is a CAD modeling software from Ashlar, Inc. A security vulnerability exists in Ashlar Vellum Graphite that stems from a failure to properly validate the length of user-supplied data before copying it to a heap-based buffer. An attacker could exploit the vulnerability to...

xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing f...

xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty

A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty function in randr/rrproperty.c, allowing f...

Microsoft Edge Chakra JIT - Stack-to-Heap Copy (Incomplete Fix) (1)

/ Here's a snippet of JavascriptArray::BoxStackInstance. To fix issue 1420 , "deepCopy" was introduced. But it only deep-copies the array when "instance-head" is on the stack. So simply by adding a single line of code that allocates "head" to the heap, we can bypass the fix. template T...

Microsoft Edge Chakra JIT - Stack-to-Heap Copy (Incomplete Fix) Exploit

Exploit for windows platform in category dos / poc / Here's a snippet of JavascriptArray::BoxStackInstance. To fix issue 1420 , "deepCopy" was introduced. But it only deep-copies the array when "instance-head" is on the stack. So simply by adding a single line of code that allocates "head" to the...

Microsoft Edge Chakra JIT - Stack-to-Heap Copy (Incomplete Fix) (2)

/ Here's a snippet of JavascriptArray::BoxStackInstance. template T JavascriptArray::BoxStackInstanceT instance, bool deepCopy AssertThreadContext::IsOnStackinstance; // On the stack, the we reserved a pointer before the object as to store the boxed value T boxedInstanceRef = T instance - 1; T...

Microsoft Edge Chakra JIT Stack-To-Heap Copy Bug

Microsoft Edge: Chakra: JIT: stack-to-heap copy bug CVE-2018-0776 If variables don't escape the scope, the variables can be allocated to the stack. However, there are some situations, such as when a bailout happens or accessing to arguments containing stack-allocated variables, where those...

Microsoft Edge Chakra JIT - Stack-to-Heap Copy Exploit

Exploit for windows platform in category dos / poc / If variables don't escape the scope, the variables can be allocated to the stack. However, there are some situations, such as when a bailout happens or accessing to arguments containing stack-allocated variables, where those variables should no...

Microsoft Edge Chakra JIT - Stack-to-Heap Copy

/ If variables don't escape the scope, the variables can be allocated to the stack. However, there are some situations, such as when a bailout happens or accessing to arguments containing stack-allocated variables, where those variables should not exist in the stack. In these cases, the...