An issue was discovered in Xen through 4.14.x. Nodes in xenstore have an ownership. In oxenstored, a owner could give a node away. However, node ownership has quota implications. Any guest can run another guest out of quota, or create an unbounded number of nodes owned by dom0, thus running xenstored out of memory A malicious guest administrator can cause a denial of service against a specific guest or against the whole host. All systems using oxenstored are vulnerable. Building and using oxenstored is the default in the upstream Xen distribution, if the Ocaml compiler is available. Systems using C xenstored are not vulnerable.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2020-12-15T18:00:47
Updated: 2024-08-04T16:55:09.950Z
Reserved: 2020-12-03T00:00:00
Link: CVE-2020-29486
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-12-15T18:15:15.567
Modified: 2024-11-21T05:24:05.500
Link: CVE-2020-29486
Redhat
No data.