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CVE-2017-14318
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
An issue was discovered in Xen 4.5.x through 4.9.x. The function `__gnttab_cache_flush` handles GNTTABOP_cache_flush grant table operations. It checks to see if the calling domain is the owner of the page that is to be operated on. If it is not, the owner's grant table is checked to see if a grant mapping to the calling domain exists for the page in question. However, the function does not check to see if the owning domain actually has a grant table or not. Some special domains, such as `DOMID_XEN`, `DOMID_IO` and `DOMID_COW` are created without grant tables. Hence, if __gnttab_cache_flush operates on a page owned by these special domains, it will attempt to dereference a NULL pointer in the domain struct..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 4.9/10
- Exploit Score
- 3.9/10
- Access Vector
- Local
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 6.9/10
- Confidentiality Impact
- None
- Availability Impact
- Complete
- Integrity Impact
- None
CVSSv3.1 Score
- Severity
- Medium
- Base Score
- 6.5/10
- Exploit Score
- 2/10
- Access Vector
- Local
- Access Complexity
- Low
- Privileges Required
- Low
- Impact Score
- 4/10
- Confidentiality Impact
- None
- Availability Impact
- High
- Integrity Impact
- None
- Scope
- Changed
- User Interaction
- None
Products Affected
| CPE | Affected | Vulnerable | Excluding | Edit |
|---|---|---|---|---|
| cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.6.6:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.6.3:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.7.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.8.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.9.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.8.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.7.3:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:xen:xen:4.7.2:*:*:*:*:*:*:* |
Yes
|
- | - |