--- title: "CVE-2021-3602\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2021-3602?format=md keywords: index, follow --- # CVE-2021-3602 Publication date 3 March 2022 Last updated 11 July 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **5.5 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2021-3602?format=md#impact-score) Toggle side navigation ## Description An information disclosure flaw was found in Buildah, when building containers using chroot isolation. Running processes in container builds (e.g. Dockerfile RUN commands) can access environment variables from parent and grandparent processes. When run in a container in a CI/CD environment, environment variables may include sensitive information that was shared with the container in order to be used only by Buildah itself (e.g. container registry credentials). ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | golang-github-containers-buildah | 26.04 LTS resolute | Vulnerable | | 25.10 questing | Ignored end of life, was needed | | 25.04 plucky | Ignored end of life, was needed | | 24.10 oracular | Ignored end of life, was needed | | 24.04 LTS noble | Vulnerable | | 23.10 mantic | Ignored end of life, was needed | | 23.04 lunar | Ignored end of life, was needed | | 22.10 kinetic | Ignored end of life, was needed | | 22.04 LTS jammy | Vulnerable | | 21.10 impish | Ignored end of life | | 21.04 hirsute | Ignored end of life | | 20.10 groovy | Ignored end of life | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 5.5 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Local | | Attack complexity | Low | | Privileges required | Low | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | High | | Integrity impact | None | | Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 5.5 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3602) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2021-3602) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2021-3602) * [Debian](https://security-tracker.debian.org/tracker/CVE-2021-3602) ### Other references * * * * *