CVE-2020-29481
Fixed in a distro release EPSS <1%
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.
Products: xen, debian_linux, fedoraproject fedora
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.11 | xen | 4.13.2-r3 |
| Alpine 3.12 | xen | 4.13.2-r3 |
| Alpine 3.13 | xen | 4.14.1-r0 |
| Alpine 3.14 | xen | 4.14.1-r0 |
| Alpine 3.15 | xen | 4.14.1-r0 |
| Alpine 3.16 | xen | 4.14.1-r0 |
| Alpine 3.17 | xen | 4.14.1-r0 |
| Alpine 3.18 | xen | 4.14.1-r0 |
| Alpine 3.19 | xen | 4.14.1-r0 |
| Alpine 3.20 | xen | 4.14.1-r0 |
| Alpine 3.21 | xen | 4.14.1-r0 |
| Alpine 3.22 | xen | 4.14.1-r0 |
| Alpine 3.23 | xen | 4.14.1-r0 |
| Alpine 3.24 | xen | 4.14.1-r0 |
| Debian 10 | xen | 4.11.4+57-g41a822c392-2 |
| Debian 12 | xen | 4.14.0+88-g1d1d1f5391-1 |
| Debian 13 | xen | 4.14.0+88-g1d1d1f5391-1 |
| Debian 14 | xen | 4.14.0+88-g1d1d1f5391-1 |
| SUSE Enterprise Storage 5 | xen | 4.9.4_16-3.80.1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_16-3.80.1 |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | xen | 4.10.4_24-3.53.1 |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | xen | 4.10.4_24-3.53.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | xen | 4.12.4_06-3.40.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | xen | 4.13.2_06-3.22.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | xen | 4.12.4_06-3.40.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | xen | 4.13.2_06-3.22.1 |
| SUSE Linux Enterprise Server 11 SP4-LTSS | xen | 4.4.4_48-61.61.1 |
| SUSE Linux Enterprise Server 12 SP2-BCL | xen | 4.7.6_14-43.73.1 |
| SUSE Linux Enterprise Server 12 SP2-LTSS | xen | 4.7.6_14-43.73.1 |
| SUSE Linux Enterprise Server 12 SP3-BCL | xen | 4.9.4_16-3.80.1 |
| SUSE Linux Enterprise Server 12 SP3-LTSS | xen | 4.9.4_16-3.80.1 |
| SUSE Linux Enterprise Server 12 SP4-LTSS | xen | 4.11.4_16-2.48.1 |
| SUSE Linux Enterprise Server 12 SP5 | xen | 4.12.4_06-3.36.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | xen | 4.7.6_14-43.73.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.4_16-3.80.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | xen | 4.11.4_16-2.48.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | xen | 4.12.4_06-3.36.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 | xen | 4.10.4_24-3.53.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP5 | xen | 4.12.4_06-3.36.1 |
| SUSE OpenStack Cloud 7 | xen | 4.7.6_14-43.73.1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_16-3.80.1 |
| SUSE OpenStack Cloud 9 | xen | 4.11.4_16-2.48.1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_16-3.80.1 |
| SUSE OpenStack Cloud Crowbar 9 | xen | 4.11.4_16-2.48.1 |
| Ubuntu 16.04 LTS | xen | no fix |
| Ubuntu 18.04 LTS | xen | no fix |
| Ubuntu 20.04 LTS | xen | no fix |
| openSUSE Leap 15.1 | xen | 4.12.4_06-lp151.2.36.1 |
| openSUSE Leap 15.2 | xen | 4.13.2_06-lp152.2.21.1 |
| openSUSE Tumbleweed | xen | 4.15.1_01-1.2 |