CVE-2017-10920 — Improper Restriction of Operations within the Bounds of a Memory Buffer in XEN

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer8 documents7 sources
Severity
10.0CRITICALNVD
EPSS
1.1%
top 21.65%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENDebian XEN
Timeline
PublishedJul 5
Latest updateMay 13

Description

The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host_map unmapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 1.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HExploitability: 3.9 | Impact: 6.0

Affected Packages3 packages

▶debiandebian/xen< xen 4.8.1-1+deb9u3 (bookworm)
▶Debianxen/xen< 4.8.1-1+deb9u3+3
▶NVDxen/xen4.8.1

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-4rcm-4m7v-65fw: The grant-table feature in Xen through 4↗2022-05-13
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OSV
CVE-2017-10920: The grant-table feature in Xen through 4↗2017-07-05
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📋Vendor Advisories

2
Red Hat
xen: grant table operations mishandle reference counts (XSA-224)↗2017-06-20
▶
Debian
CVE-2017-10920: xen - The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and ...↗2017
▶

📄Research Papers

1
arXiv
Trusted Container Extensions for Container-based Confidential Computing↗2022-05-11
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💬Community

2
Bugzilla
CVE-2017-10911 CVE-2017-10912 CVE-2017-10913 CVE-2017-10914 CVE-2017-10915 CVE-2017-10916 CVE-2017-10918 CVE-2017-10919 CVE-2017-10920 CVE-2017-10921 CVE-2017-10922 CVE-2017-10923 xen: various flaws [↗2017-06-20
▶
Bugzilla
CVE-2017-10920 CVE-2017-10921 CVE-2017-10922 xsa224 xen: grant table operations mishandle reference counts (XSA-224)↗2017-06-05
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