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ALPINE-CVE-2020-29481 PUBLISHED CVSS 8.800000190734863 HIGH

An issue was discovered in Xen through 4.14.x. Access rights of Xenstore nodes are per domid. Unfortunately, existing granted access rights are not removed when a domain is being destroyed. This means that a new domain created with the same domid will inherit the access rights to Xenstore nodes from the previous domain(s) with the same domid. Because all Xenstore entries of a guest below /local/domain/<domid> are being deleted by Xen tools when a guest is destroyed, only Xenstore entries of other guests still running are affected. For example, a newly created guest domain might be able to read sensitive information that had belonged to a previously existing guest domain. Both Xenstore implementations (C and Ocaml) are vulnerable.

Risk Scores

CVSS v3.1
8.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Products

VendorProductVersions
Alpine:v3.18xen4.13.1-r2, 4.9.1-r3, 4.9.1-r2
Alpine:v3.16xen0, 4.9.1-r3, 4.9.1-r2
Alpine:v3.13xen4.7.2-r0, 4.8.1-r0, 4.8.1-r1
Alpine:v3.21xen4.5.0-r1, 4.5.0-r0, 4.5.0-r1
Alpine:v3.17xen4.12.0-r2, 0, 4.0.1-r0
Alpine:v3.11xen4.9.1-r3, 4.9.1-r2, 4.9.1-r1
Alpine:v3.14xen4.9.0-r0, 4.7.0-r5, 4.7.0-r4
Alpine:v3.20xen4.9.1-r3, 4.4.2-r1, 4.4.2-r0
Alpine:v3.22xen4.3.0-r4, 0, 4.0.1-r0
Alpine:v3.19xen0, 4.0.1-r0, 4.0.1-r1
Alpine:v3.23xen4.1.1-r1, 4.0.1-r0, 4.0.1-r1
Alpine:v3.15xen4.13.1-r5, 4.14.0-r0, 4.14.0-r1
Alpine:v3.12xen4.7.1-r5, 0, 4.9.1-r3

Timeline

References

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