9.1
CVE-2021-43816
- EPSS 0.15%
- Published 05.01.2022 19:15:08
- Last modified 21.11.2024 06:29:51
- Source security-advisories@github.com
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containerd is an open source container runtime. On installations using SELinux, such as EL8 (CentOS, RHEL), Fedora, or SUSE MicroOS, with containerd since v1.5.0-beta.0 as the backing container runtime interface (CRI), an unprivileged pod scheduled to the node may bind mount, via hostPath volume, any privileged, regular file on disk for complete read/write access (sans delete). Such is achieved by placing the in-container location of the hostPath volume mount at either `/etc/hosts`, `/etc/hostname`, or `/etc/resolv.conf`. These locations are being relabeled indiscriminately to match the container process-label which effectively elevates permissions for savvy containers that would not normally be able to access privileged host files. This issue has been resolved in version 1.5.9. Users are advised to upgrade as soon as possible.
Data is provided by the National Vulnerability Database (NVD)
Linuxfoundation ≫ Containerd Version >= 1.5.1 < 1.5.9
Linuxfoundation ≫ Containerd Version1.5.0 Update-
Linuxfoundation ≫ Containerd Version1.5.0 Updatebeta0
Linuxfoundation ≫ Containerd Version1.5.0 Updatebeta1
Linuxfoundation ≫ Containerd Version1.5.0 Updatebeta2
Linuxfoundation ≫ Containerd Version1.5.0 Updatebeta3
Linuxfoundation ≫ Containerd Version1.5.0 Updatebeta4
Linuxfoundation ≫ Containerd Version1.5.0 Updaterc0
Linuxfoundation ≫ Containerd Version1.5.0 Updaterc1
Linuxfoundation ≫ Containerd Version1.5.0 Updaterc2
Linuxfoundation ≫ Containerd Version1.5.0 Updaterc3
Fedoraproject ≫ Fedora Version34
Fedoraproject ≫ Fedora Version35
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.15% | 0.358 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 9.1 | 2.3 | 6 |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
|
| nvd@nist.gov | 6 | 6.8 | 6.4 |
AV:N/AC:M/Au:S/C:P/I:P/A:P
|
| security-advisories@github.com | 8 | 1.3 | 6 |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
|
CWE-281 Improper Preservation of Permissions
The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.