CVE-2020-12138
AMD ATI atillk64.sys 5.11.9.0 allows low-privileged users to interact directly with physical memory by calling one of several driver routines that map physical memory into the virtual address space of the calling process.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
AMD ATI atillk64.sys 5.11.9.0 allows low-privileged users to interact directly with physical memory by calling one of several driver routines that map physical memory into the virtual address space of the calling process. This could enable low-privileged users to achieve NT AUTHORITY\SYSTEM privileges via a DeviceIoControl call associated with MmMapIoSpace, IoAllocateMdl, MmBuildMdlForNonPagedPool, or MmMapLockedPages.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.32% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- amd/atillk64
- Source
- cve@mitre.org
References
- https://eclypsium.com/2019/11/12/mother-of-all-drivers/Third Party Advisory
- https://h0mbre.github.io/atillk64_exploit/Exploit, Third Party Advisory
- https://eclypsium.com/2019/11/12/mother-of-all-drivers/Third Party Advisory
- https://h0mbre.github.io/atillk64_exploit/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.