CVE-2025-8283

Netavark: podman: netavark may resolve hostnames to unexpected hosts

Description

A vulnerability was found in the netavark package, a network stack for containers used with Podman. Due to dns.podman search domain being removed, netavark may return external servers if a valid A/AAAA record is sent as a response. When creating a container with a given name, this name will be used as the hostname for the container itself, as the podman's search domain is not added anymore the container is using the host's resolv.conf, and the DNS resolver will try to look into the search domains contained on it. If one of the domains contain a name with the same hostname as the running container, the connection will forward to unexpected external servers.

Remediation

Workaround:

  • As a proactive mitigation, configure containers to have hostnames formatted as .dns.podman. This specific naming convention will prevent aardvark-dns from forwarding these queries to external search domains, thereby reducing potential exposure or unexpected network behavior associated with such queries.

Category

3.7
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat OpenShift Container Platform 4
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2025-8283 vendor advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2383941 issue tracking

Frequently Asked Questions

What is the severity of CVE-2025-8283?
CVE-2025-8283 has been scored as a low severity vulnerability.
How to fix CVE-2025-8283?
As a workaround for remediating CVE-2025-8283: As a proactive mitigation, configure containers to have hostnames formatted as .dns.podman. This specific naming convention will prevent aardvark-dns from forwarding these queries to external search domains, thereby reducing potential exposure or unexpected network behavior associated with such queries.
Is CVE-2025-8283 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-8283 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-8283?
CVE-2025-8283 affects Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat OpenShift Container Platform 4.
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