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Improper Control of a Resource Through its Lifetime Affecting github.com/docker/docker/libnetwork package, versions <25.0.5 >=26.0.0-rc1 <26.0.0-rc3

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    EPSS 0.04% (9th percentile)
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Red Hat
5.9 medium

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  • Snyk ID SNYK-GOLANG-GITHUBCOMDOCKERDOCKERLIBNETWORK-6474507
  • published 21 Mar 2024
  • disclosed 20 Mar 2024
  • credit yair zak
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Introduced: 20 Mar 2024

CVE-2024-29018 Open this link in a new tab
CWE-669 Open this link in a new tab

How to fix?

Upgrade github.com/docker/docker/libnetwork to version 25.0.5, 26.0.0-rc3 or higher.

Overview

github.com/docker/docker/libnetwork is a package that provides a native Go implementation for connecting containers

Affected versions of this package are vulnerable to Improper Control of a Resource Through its Lifetime in allowing DNS requests from internal networks to be forwarded to an external nameserver, violating the documented expectation that the --internal option will "completely isolate" the internal network. An attacker in control of the authoritative nameserver for a domain could indirectly exfiltrate data through DNS queries made by a compromised container.

Workaround

This vulnerability can be avoided by running containers with a custom address for the --dns argument to docker run.