CVE-2017-9605 Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
The vmw_gb_surface_define_ioctl function (accessible via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.11.4 defines a backup_handle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DMA buffer to be used as a backup buffer, the backup_handle variable does not get written to and is then later returned to user space, allowing local users to obtain sensitive information from uninitialized kernel memory via a crafted ioctl call.
Source:
MITRE
Description Last Modified:
06/13/2017
View Analysis Description
Analysis Description
The vmw_gb_surface_define_ioctl function (accessible via DRM_IOCTL_VMW_GB_SURFACE_CREATE) in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.11.4 defines a backup_handle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DMA buffer to be used as a backup buffer, the backup_handle variable does not get written to and is then later returned to user space, allowing local users to obtain sensitive information from uninitialized kernel memory via a crafted ioctl call.
Source:
MITRE
Description Last Modified:
06/13/2017
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
References to Advisories, Solutions, and Tools
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Technical Details
Vulnerability Type
(View All)
- Information Leak / Disclosure (CWE-200)
Change History
3 change records found
- show changes
CVE Modified by MITRE -
11/3/2017 9:29:57 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.debian.org/security/2017/dsa-3927 [No Types Assigned] |
| Added |
Reference |
|
http://www.debian.org/security/2017/dsa-3945 [No Types Assigned] |
Initial Analysis -
6/27/2017 10:54:00 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:o:linux:linux_kernel:4.11.4:*:*:*:*:*:*:* (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 |
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07678eca2cf9c9a18584e546c2b2a0d0c9a3150c No Types Assigned |
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07678eca2cf9c9a18584e546c2b2a0d0c9a3150c Issue Tracking, Patch, Third Party Advisory |
| Changed |
Reference Type |
http://www.securityfocus.com/bid/99095 No Types Assigned |
http://www.securityfocus.com/bid/99095 Third Party Advisory, VDB Entry |
| Changed |
Reference Type |
https://github.com/torvalds/linux/commit/07678eca2cf9c9a18584e546c2b2a0d0c9a3150c No Types Assigned |
https://github.com/torvalds/linux/commit/07678eca2cf9c9a18584e546c2b2a0d0c9a3150c Issue Tracking, Patch, Third Party Advisory |
CVE Modified by MITRE -
6/19/2017 9:29:00 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securityfocus.com/bid/99095 [No Types Assigned] |
Quick Info
CVE Dictionary Entry:
CVE-2017-9605
NVD Published Date:
06/13/2017
NVD Last Modified:
11/03/2017
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