Vulnerability identifier: #VU33995

Vulnerability risk: High

CVSSv3.1: 7.8 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-2025

CWE-ID: N/A

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Kata Containers
Server applications / Virtualization software

Vendor: Kata Containers

Description

The vulnerability allows a remote attacker to take over all guest operating systems on the hypervisor.

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Kata Containers: 1.9.3 - 1.10.6

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External links
http://github.com/kata-containers/runtime/pull/2487

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.