CVE-2017-14316
September 12, 2017
A parameter verification issue was discovered in Xen through 4.9.x. The function "alloc_heap_pages" allows callers to specify the first NUMA node that should be used for allocations through the "memflags" parameter; the node is extracted using the "MEMF_get_node" macro. While the function checks to see if the special constant "NUMA_NO_NODE" is specified, it otherwise does not handle the case where "node >= MAX_NUMNODES". This allows an out-of-bounds access to an internal array.
Related Resources (8)
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Contact UsCVSS v4
Base Score:
8.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
CVSS v2
Base Score:
7.2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Weakness Type (CWE)
Out-of-bounds Read
EPSS
Base Score:
0.07
