UBUNTU-CVE-2020-29481
See a problem?- Source
- https://ubuntu.com/security/notices/UBUNTU-CVE-2020-29481
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-29481.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-29481
- Related
- Published
- 2020-12-15T18:15:00Z
- Modified
- 2020-12-15T18:15:00Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Ubuntu:Pro:16.04:LTS / xen
Package
- Name
- xen
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Ubuntu:Pro:18.04:LTS / xen
Package
- Name
- xen
Ubuntu:20.04:LTS / xen
Package
- Name
- xen
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected