msrc-blog

Windows 10 made a lot of improvements in Kernel Address Space Layout Randomization (KASLR) that increases the cost of exploitation, particularly for remote code execution exploits. Many kernel virtual address space (VAS) locations including kernel stacks, pools, system PTEs etc. are randomized. A well-known exception to this is the KUSER_SHARED_DATA structure which is a page of memory that has always been traditionally mapped at a fixed virtual address in the kernel.

Microsoft is committed to partnering with and supporting women in security research. Whether it’s growing women early in their career, or connecting people with mentors, we want to be a part of the journey. Throughout Women’s History Month we intentionally sought opportunities to engage with women in security research. Whether at an intimate gathering of … Increasing Representation of Women in Security Research Read More »

Microsoft is committed to partnering with and supporting women in security research. Whether it’s growing women early in their career, or connecting people with mentors, we want to be a part of the journey. Throughout Women’s History Month we intentionally sought opportunities to engage with women in security research. Whether at an intimate gathering of some of the most respected women in security research or engaging with women early in their career, it became obvious there just aren’t enough women in security research.

Microsoft is committed to partnering with and supporting women in security research. Whether it’s growing women early in their career, or connecting people with mentors, we want to be a part of the journey. Throughout Women’s History Month we intentionally sought opportunities to engage with women in security research. Whether at an intimate gathering of some of the most respected women in security research or engaging with women early in their career, it became obvious there just aren’t enough women in security research.

Opps, this post exists, but was actually published 4/5/2022. We’re navigating you to the correct page now. If that doesn’t work click the link below: Randomizing the KUSER_SHARED_DATA Structure on Windows – Microsoft Security Response Center

Opps, this post exists, but was actually published 4/5/2022. We’re navigating you to the correct page now. If that doesn’t work click the link below: Randomizing the KUSER_SHARED_DATA Structure on Windows – Microsoft Security Response Center

Opps, this post exists, but was actually published 4/5/2022. We’re navigating you to the correct page now. If that doesn’t work click the link below: Randomizing the KUSER_SHARED_DATA Structure on Windows – Microsoft Security Response Center

The security landscape is dynamic, changing often and as a result, attack surfaces evolve. MSRC receives a wide variety of cases spanning different products, bug types and exploit primitives. One particularly interesting primitive we see is an arbitrary kernel pointer read. These often happen when kernel mode code does not validate that pointers read from … Exploring a New Class of Kernel Exploit Primitive Read More »

The security landscape is dynamic, changing often and as a result, attack surfaces evolve. MSRC receives a wide variety of cases spanning different products, bug types and exploit primitives. One particularly interesting primitive we see is an arbitrary kernel pointer read. These often happen when kernel mode code does not validate that pointers read from attacker-controlled input actually point to the user-mode portion of the Virtual Address Space (VAS).

The security landscape is dynamic, changing often and as a result, attack surfaces evolve. MSRC receives a wide variety of cases spanning different products, bug types and exploit primitives. One particularly interesting primitive we see is an arbitrary kernel pointer read. These often happen when kernel mode code does not validate that pointers read from attacker-controlled input actually point to the user-mode portion of the Virtual Address Space (VAS).