libxencall1: An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain...
CVE-2020-11741 is fixed in 22 products on 1 platform, first by libxencall1 4.11.3+24-g14b62ab3e5-1ubuntu2.3, released September 23, 2020. It is not reported as exploited. Patch Radar priority: Routine.
An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (with active profiling) to obtain sensitive information about other guests, cause a denial of service, or possibly gain privileges. For guests for which "active" profiling was enabled by the administrator, the xenoprof code uses the standard Xen shared ring structure. Unfortunately, this code did not treat the guest as a potential adversary: it trusts the guest not to modify buffer size information or modify head / tail pointers in unexpected ways. This can crash the host (DoS). Privilege escalation cannot be ruled out.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libxencall1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxencall1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxendevicemodel1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxendevicemodel1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxenevtchn1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxenevtchn1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxenforeignmemory1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxenforeignmemory1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxengnttab1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxengnttab1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxenmisc4.11 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxenmisc4.11 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxenstore3.0 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxenstore3.0 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxentoolcore1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxentoolcore1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| libxentoollog1 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | libxentoollog1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-4.11-amd64 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-4.11-amd64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-4.11-arm64 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-4.11-arm64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-4.11-armhf · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-4.11-armhf 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-4.9-amd64 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-4.9-amd64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-4.9-arm64 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-4.9-arm64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-4.9-armhf · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-4.9-armhf 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-hypervisor-common · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-hypervisor-common 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-system-amd64 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-system-amd64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-system-arm64 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-system-arm64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-system-armhf · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-system-armhf 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-utils-4.11 · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-utils-4.11 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xen-utils-common · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xen-utils-common 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
| xenstore-utils · Ubuntu 20.04 LTS (focal) | 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | xenstore-utils 4.11.3+24-g14b62ab3e5-1ubuntu2.3 | Sep 23, 2020 |
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