CVE-2021-4024
mediumpriority · track · 26EPSS 0.011 · 66 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (14)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-3cf2-x423-x582Exposure of Sensitive Information to an Unauthorized Actor and Origin Validation Error in podman2022-01-06ghsa · osvUS
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.
- GO-2022-0281Exposure of Sensitive Information to an Unauthorized Actor and Origin Validation Error in podman in github.com/containers/podman2024-08-21vendor · osvUS
Exposure of Sensitive Information to an Unauthorized Actor and Origin Validation Error in podman in github.com/containers/podman
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (16)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2021-4024cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2026675cnnvd
- https://github.com/containers/podman/releases/tag/v3.4.3cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QFFVJ6S3ZRMPDYB7KYAWEMDHXFZYQPU3/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-4024cnnvd
- https://packetstormsecurity.com/files/169886/Red-Hat-Security-Advisory-2022-7954-01.htmlcnnvd
- https://vigilance.fr/vulnerability/Podman-information-disclosure-via-7777-tcp-37099cnnvd
- https://www.auscert.org.au/bulletins/ESB-2022.5879cnnvd
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