Out-of-bounds Read Affecting xen package, versions <4.8.2+xsa245-0+deb9u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-XEN-367119
- published12 Sept 2017
- disclosed12 Sept 2017
Introduced: 12 Sep 2017
CVE-2017-14316 (opens in a new tab)How to fix?
Upgrade Debian:unstable xen to version 4.8.2+xsa245-0+deb9u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2017-14316
- https://support.citrix.com/article/CTX227185
- http://xenbits.xen.org/xsa/advisory-231.html
- https://www.debian.org/security/2017/dsa-4050
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
- http://www.securityfocus.com/bid/100818
- http://www.securitytracker.com/id/1039348
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-14316