GitHub Advisoryadvisory · Go
GHSA-f7qw-jj9c-rpq9 In Lima, a malicious disk image could read a single file on the host filesystem as a qcow2/vmdk backing file
LOW
Official page ↗
- Aliases
- CVE-2023-32684
- Ecosystem
- Go
- Packages
- github.com/lima-vm/lima
- Severity
- Low
- CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
- Weaknesses
- CWE-552
- Reviewed
- 2023-05-31
Affected packages
• Go github.com/lima-vm/lima: < 0.16.0 → fixed in 0.16.0
Description
> 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.
Related
Alias · CVE (1)
- CVE-2023-32684 Lima launches Linux virtual machines, typically on macOS, for running containerd. vulnerability
Weakness · CWE (1)
- CWE-552 Files or Directories Accessible to External Parties weakness
References
- https://github.com/lima-vm/lima/security/advisories/GHSA-f7qw-jj9c-rpq9 web
- https://nvd.nist.gov/vuln/detail/CVE-2023-32684 advisory
- https://github.com/lima-vm/lima/commit/01dbd4d9cabe692afa4517be3995771f0ebb38a5 web
- https://github.com/lima-vm/lima package
- https://github.com/lima-vm/lima/releases/tag/v0.16.0 web