CVE-2021-4024
Exposure of Sensitive Information to an Unauthorized Actor and Origin Validation Error in podman in github.com/containers/podman
Description
A flaw was found in podman. The `podman machine` function (used to create and manage Podman virtual machine containing a Podman process) spawns a `gvproxy` process on the host system. The `gvproxy` API is accessible on port 7777 on all IP addresses on the host. If that port is open on the host's firewall, an attacker can potentially use the `gvproxy` API to forward ports on the host to ports in the VM, making private services on the VM accessible to the network. This issue could be also used to interrupt the host's services by forwarding all ports to the VM.
How to fix CVE-2021-4024
To remediate CVE-2021-4024, upgrade the affected package to a fixed version below.
- —upgrade to 3.4.3+ds1-1 or later
- —no fix listed
- —no fix listed
- —upgrade to 3.4.3 or later
- —upgrade to 3.4.3 or later
Is CVE-2021-4024 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 3.4.3+ds1-1
- from 0
- from 0
- from 0, < 3.4.3
- from 0, < 3.4.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L |