Out-of-bounds Read in Xen
CVE-2017-14316
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.securityfocus.com/bid/100818 (VDB Entry, Third Party Advisory, vdb-entry)
- xenbits.xen.org/xsa/advisory-231.html (Patch, Vendor Advisory)
- support.citrix.com/article/CTX227185
- www.debian.org/security/2017/dsa-4050 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00009.html (mailing-list)
- www.securitytracker.com/id/1039348 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-14316?
- CVE-2017-14316 is a high-severity vulnerability in Xen, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2017-09-12.
- How severe is CVE-2017-14316?
- High severity. CVSS v3 base score is 8.8 out of 10.