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GHSA-f7qw-jj9c-rpq9
No affected components available
Note
The official templates of Lima, and the well-known third party products (Colima, Rancher Desktop, and Finch) are unlikely to be affected by this issue.
Impact
A virtual machine instance with a malicious disk image could read a single file on the host filesystem, even when no filesystem is mounted from the host.
To exploit this issue, the attacker has to embed the target file path (an absolute or a relative path from the instance directory) in a malicious disk image, as the qcow2 (or vmdk) backing file path string.
As Lima refuses to run as the root, it is practically impossible for the attacker to read the entire host disk via /dev/rdiskN.
Also, practically, the attacker cannot read at least the first 512 bytes (MBR) of the target file.
Patches
Patched in Lima v0.16.0, by prohibiting using a backing file path in the VM base image.
Workarounds
Do not use an untrusted disk image.
The vulnerability requires local access to the device to be exploited. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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