Description
Kata Containers before 1.11.0 on Cloud Hypervisor persists guest filesystem changes to the underlying image file on the host. A malicious guest can overwrite the image file to gain control of all subsequent guest VMs. Since Kata Containers uses the same VM image file with all VMMs, this issue may also affect QEMU and Firecracker based guests.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Kata Containers | Kata Containers | unspecified – < 1.11.0 | 1.11.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | istio +10 | 1.4.10-1.0.1.el7 | ELSA-2020-5765 |
| Oracle Linux 7 | kata | 1.7.3-1.0.7.el7 | ELSA-2020-5766, ELSA-2020-5765 |
| Oracle Linux 7 | kata-image | 1.7.3-1.0.5.1.ol7_202007011859 | ELSA-2020-5766, ELSA-2020-5765 |
| Oracle Linux 7 | kata-runtime | 1.7.3-1.0.5.el7 | ELSA-2020-5766, ELSA-2020-5765 |
| Oracle Linux 7 | kernel-uek-container | 4.14.35-1902.303.5.3.el7 | ELSA-2020-5766, ELSA-2020-5765 |
| Oracle Linux 7 | kubeadm +2 | 1.14.9-1.0.6.el7 | ELSA-2020-5766, ELSA-2020-5765 |
| Oracle Linux 7 | olcne-istio-chart +1 | 1.1.2-6.el7 | ELSA-2020-5765 |
| Oracle Linux 7 | olcnectl +4 | 1.0.5-3.el7 | ELSA-2020-5766, ELSA-2020-5765 |
Advisories 2
- ELSA-2020-5765 Important: Unbreakable Enterprise kernel-container kata-image kata-runtime kata kubernetes kubernetes istio olcne security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 22, 2020
- ELSA-2020-5766 Important: Unbreakable Enterprise kernel-container kata-image kata-runtime kata kubernetes olcne security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 22, 2020