VDB
CVE-2020-29486
CVE-2020-29486
PUBLISHED
CVSS 6 MEDIUM
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.
EPSS 0.41% · 32.9th percentile
Risk Scores
CVSS 3.1
6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
EPSS Score
0.41%
32.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | xen | 0, 4.5.1-0ubuntu2, 4.6.0-1ubuntu1 |
| Ubuntu:18.04:LTS | xen | 0, 4.9.0-0ubuntu4, 4.9.2-0ubuntu1 |
| Ubuntu:20.04:LTS | xen | 0, 4.9.2-0ubuntu2, 4.9.2-0ubuntu6 |
Timeline
- Dec 15, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 2, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 4, 2022 EPSS Score
- Jul 6, 2022 EPSS Score
- Sep 8, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-29486 third-party-advisory
- https://xenbits.xen.org/xsa/advisory-352.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-29486 third-party-advisory