Current Description
The acpi_ds_create_operands() function in drivers/acpi/acpica/dsutils.c in the Linux kernel through 4.12.9 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.
Source:
MITRE
Description Last Modified:
08/25/2017
View Analysis Description
Analysis Description
The acpi_ds_create_operands() function in drivers/acpi/acpica/dsutils.c in the Linux kernel through 4.12.9 does not flush the operand cache and causes a kernel stack dump, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism (in the kernel through 4.9) via a crafted ACPI table.
Source:
MITRE
Description Last Modified:
08/25/2017
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
5.5 MEDIUM
Vector:
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
(V3 legend)
Impact Score:
3.6
Exploitability Score:
1.8
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
None
Availability (A):
None
CVSS v2.0 Severity and Metrics:
Base Score:
4.9 MEDIUM
Vector:
(AV:L/AC:L/Au:N/C:C/I:N/A:N)
(V2 legend)
Impact Subscore:
6.9
Exploitability Subscore:
3.9
Access Vector (AV):
Local
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Complete
Integrity (I):
None
Availability (A):
None
Additional Information:
Allows unauthorized disclosure of information
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Technical Details
Vulnerability Type
(View All)
- Information Leak / Disclosure (CWE-200)
Change History
3 change records found
- show changes
Modified Analysis -
9/20/2017 10:51:00 AM
| Action |
Type |
Old Value |
New Value |
| Changed |
CPE Configuration |
OR
*cpe:2.3:o:linx:linux_kernel:4.12.9:*:*:*:*:*:*:* (and previous) |
OR
*cpe:2.3:o:linux:linux_kernel:4.12.9:*:*:*:*:*:*:* (and previous) |
| Changed |
Reference Type |
http://www.securityfocus.com/bid/100502 No Types Assigned |
http://www.securityfocus.com/bid/100502 Third Party Advisory, VDB Entry |
CVE Modified by MITRE -
8/29/2017 9:29:00 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securityfocus.com/bid/100502 [No Types Assigned] |
Initial Analysis -
8/28/2017 11:13:26 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:o:linx:linux_kernel:4.12.9:*:*:*:*:*:*:* (and previous) |
| Added |
CVSS V2 |
|
(AV:L/AC:L/Au:N/C:C/I:N/A:N) |
| Added |
CVSS V3 |
|
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Added |
CWE |
|
CWE-200 |
| Changed |
Reference Type |
https://github.com/acpica/acpica/pull/295/commits/987a3b5cf7175916e2a4b6ea5b8e70f830dfe732 No Types Assigned |
https://github.com/acpica/acpica/pull/295/commits/987a3b5cf7175916e2a4b6ea5b8e70f830dfe732 Issue Tracking, Patch, Third Party Advisory |
| Changed |
Reference Type |
https://patchwork.kernel.org/patch/9919053/ No Types Assigned |
https://patchwork.kernel.org/patch/9919053/ Patch, Third Party Advisory |