Security restrictions bypass in Red Hat OpenShift Container Platform 4.6
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-25741 |
| CWE-ID | CWE-264 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software |
openshift (Red Hat package) Operating systems & Components / Operating system package or component cri-o (Red Hat package) Operating systems & Components / Operating system package or component Red Hat OpenShift Container Platform Client/Desktop applications / Software for system administration |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Security restrictions bypass
EUVDB-ID: #VU56902
Risk: Medium
CVSSv4.0: 7.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2021-25741
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to application does not properly impose security restrictions by allowing hostPath-like access without use of the hostPath feature. A remote user can create a container with subpath volume mounts to access files and directories outside of the volume, including on the host filesystem.
Install updates from vendor's website.
openshift (Red Hat package): 4.6.0-202012051246.p0.git.94231.efc9027.el7 - 4.6.0-202108202025.p0.git.4c3480d.assembly.stream.el8
cri-o (Red Hat package): 1.19.0-26.rhaos4.6.git8a05a29.el8 - 1.19.3-11.rhaos4.6.git66a69b8.el8
Red Hat OpenShift Container Platform: 4.6.0 - 4.6.45
CPE2.3- cpe:2.3:o:red_hat:openshift_redhat_package:4.6.0-202012051246.p0.git.94231.efc9027.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.6.0-202012051246.p0.git.94231.efc9027.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.6.0-202012190744.p0.git.94235.c62c6f7.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.19.0-26.rhaos4.6.git8a05a29.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.19.1-2.rhaos4.6.git2af9ecf.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.19.1-4.rhaos4.6.git3846aab.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_openshift_container_platform:4.6.45:*:*:*:*:*:*:*
https://access.redhat.com/errata/RHSA-2021:3642
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
