Out-of-Bounds Read in Xen (CVE-2017-14316)
Summary
Vulnerability in Xen (CVE-2017-14316). Successful exploitation can lead to full system takeover. Exploitable via alloc_heap_pages.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2017-14316 has been found in Xen.
Attackers can target a specific entry point like alloc_heap_pages over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Xen CVE-2017-14316" on the vendor's site.
CVE-2017-14316 (Xen) — CWE-125 / CVSS v3 8.8
Attack vector: local / no user interaction
Attack surface: alloc_heap_pages / memflags / MEMF_get_node / NUMA_NO_NODE
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Out-of-bounds read (CWE-125) exists in Xen. Attackers reach the vulnerable code path via alloc_heap_pages.
Check the vendor advisory for the affected versions of Xen. Attack surface: alloc_heap_pages / memflags / MEMF_get_node / NUMA_NO_NODE.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Xen' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'Xen' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
Xenを grep し、稼働しているサービス・バージョンを把握する。 -
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2017-14316 xen Fixed in: 4.9.0-r4
- Debian DEBIAN-CVE-2017-14316 xen Fixed in: 4.8.2+xsa245-0+deb9u1
References
- advisory securityfocus.com
- advisory securitytracker.com
- patch xenbits.xen.org
- web lists.debian.org
- web support.citrix.com
- web debian.org