Bug 1921450 (CVE-2021-3344)
| Summary: | CVE-2021-3344 openshift/builder: privilege escalation during container image builds via mounted secrets | ||
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| Product: | [Other] Security Response | Reporter: | Sam Fowler <sfowler> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | adam.kaplan, admiller, aos-bugs, bmontgom, bparees, ccoleman, dramseur, eparis, gmontero, jburrell, jcajka, jhunter, jminter, jokerman, kmitts, mgala, mjudeiki, nalin, nstielau, security-response-team, sfowler, sponnaga |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | github.com/openshift/builder v0.0.0-20210125201112-7901cb396121 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A privilege escalation flaw was found in OpenShift builder. During build time, credentials outside the build context are automatically mounted into the container image under construction. An OpenShift user, able to execute code during build time inside this container can re-use the credentials to overwrite arbitrary container images in internal registries and/or escalate their privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-02-08 14:41:55 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1916897, 1920626, 1921965, 1921966, 1951569 | ||
| Bug Blocks: | 1921172, 1922165 | ||
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Description
Sam Fowler
2021-01-28 02:18:27 UTC
Upstream fix: https://github.com/openshift/builder/pull/206 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.6 Via RHSA-2021:0308 https://access.redhat.com/errata/RHSA-2021:0308 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-3344 Mitigation: The affected build strategies include docker, source and custom builds, hence these can be disabled as per the documentation[1]. This does however, exclude the Jenkins build strategy as it is not affected and does not have to be disabled. [1] https://docs.openshift.com/container-platform/4.6/builds/securing-builds-by-strategy.html On clusters where builds are allowed only grant permissions to perform builds to users who you wish to be to able to view, modify and edit all cluster resources. This issue has been addressed in the following products: Red Hat OpenShift Container Platform 4.5 Via RHSA-2021:0428 https://access.redhat.com/errata/RHSA-2021:0428 |