CVE-2022-27650
First published: Tue Mar 22 2022(Updated: )
A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Crun Project Crun | <1.4.4 | |
| Fedoraproject Fedora | =34 | |
| Redhat Openshift Container Platform | =4.0 | |
| Redhat Enterprise Linux | =8.0 | |
| redhat/crun | <1.4.4 | 1.4.4 |
Remedy
The entry point of a container can be modified to use a utility like capsh(1) to drop inheritable capabilities prior to the primary process starting.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-27650 https://nvd.nist.gov/vuln/detail/CVE-2022-27650 https://github.com/containers/crun/security/advisories/GHSA-wr4f-w546-m398
- https://bugzilla.redhat.com/show_bug.cgi?id=2066845
- https://access.redhat.com/errata/RHSA-2022:1762
- https://access.redhat.com/errata/RHSA-2022:1793
- https://access.redhat.com/security/cve/cve-2022-27650
- https://github.com/containers/crun/commit/1aeeed2e4fdeffb4875c0d0b439915894594c8c6
- https://github.com/containers/crun/security/advisories/GHSA-wr4f-w546-m398
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HYIGABCZ7ZHAG2XCOGITTQRJU2ASWMFA/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2070116
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HYIGABCZ7ZHAG2XCOGITTQRJU2ASWMFA/
Frequently Asked Questions
What is the vulnerability ID for this flaw in crun?
The vulnerability ID for this flaw in crun is CVE-2022-27650.
What is the severity of CVE-2022-27650?
The severity of CVE-2022-27650 is high with a severity value of 7.5.
Which software is affected by CVE-2022-27650?
The software affected by CVE-2022-27650 includes crun, Moby (Docker Engine), Fedora, Redhat Openshift Container Platform, and Redhat Enterprise Linux.
How can I fix CVE-2022-27650 in crun?
To fix CVE-2022-27650 in crun, update to version 1.4.4 or higher.
Where can I find more information about CVE-2022-27650?
You can find more information about CVE-2022-27650 in the following references: [CVE.org](https://www.cve.org/CVERecord?id=CVE-2022-27650), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-27650), [GitHub Security Advisories](https://github.com/containers/crun/security/advisories/GHSA-wr4f-w546-m398), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2066845), and [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2022:1762).
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