SUSE update for Includes a kubernetes update to 1.18.20 including a backport for CVE-2021-25741
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-25741 CVE-2021-3121 |
| CWE-ID | CWE-264 CWE-129 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
SUSE CaaS Platform Operating systems & Components / Operating system skuba-update Operating systems & Components / Operating system package or component release-notes-caasp Operating systems & Components / Operating system package or component skuba Operating systems & Components / Operating system package or component kubernetes-1.18-kubelet Operating systems & Components / Operating system package or component kubernetes-1.18-kubeadm Operating systems & Components / Operating system package or component caasp-release Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Security restrictions bypass
EUVDB-ID: #VU56902
Risk: Medium
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
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.
Update the affected package Includes a kubernetes update to 1.18.20 including a backport for CVE-2021-25741 to the latest version.
Vulnerable software versionsSUSE CaaS Platform: 4.5
skuba-update: before 2.1.15-3.15.13.2
release-notes-caasp: before 4.5.20210907-3.22.3
skuba: before 2.1.15-3.15.13.2
kubernetes-1.18-kubelet: before 1.18.20-4.11.3
kubernetes-1.18-kubeadm: before 1.18.20-4.11.3
caasp-release: before 4.5.5-1.19.3
External linkshttp://www.suse.com/support/update/announcement/2021/suse-su-20213049-1/
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.
2) Improper Validation of Array Index
EUVDB-ID: #VU52902
Risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3121
CWE-ID:
CWE-129 - Improper Validation of Array Index
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper validation of index array in plugin/unmarshal/unmarshal.go. A remote attacker can pass specially crafted data to the application and bypass implemented security restrictions, possibly leading to remote code execution.
Update the affected package Includes a kubernetes update to 1.18.20 including a backport for CVE-2021-25741 to the latest version.
Vulnerable software versionsSUSE CaaS Platform: 4.5
skuba-update: before 2.1.15-3.15.13.2
release-notes-caasp: before 4.5.20210907-3.22.3
skuba: before 2.1.15-3.15.13.2
kubernetes-1.18-kubelet: before 1.18.20-4.11.3
kubernetes-1.18-kubeadm: before 1.18.20-4.11.3
caasp-release: before 4.5.5-1.19.3
External linkshttp://www.suse.com/support/update/announcement/2021/suse-su-20213049-1/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
