Multiple vulnerabilities in OpenShift Container Platform 4.7
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-3560 CVE-2021-25217 |
| CWE-ID | CWE-264 CWE-20 |
| Exploitation vector | Local network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software Subscribe |
Red Hat OpenShift Container Platform Client/Desktop applications / Software for system administration cri-o (Red Hat package) Operating systems & Components / Operating system package or component openshift-kuryr (Red Hat package) Operating systems & Components / Operating system package or component openshift-clients (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU53837
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-3560
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in the "polkit_system_bus_name_get_creds_sync" function, which leads to security restrictions bypass and privilege escalation.
MitigationInstall updates from vendor's website.
Red Hat OpenShift Container Platform: 4.7.0 - 4.7.18
cri-o (Red Hat package): 1.20.2-3.rhaos4.7.gitfecc319.el7 - 1.20.2-12.rhaos4.7.git9f7be76.el8
openshift-kuryr (Red Hat package): 4.7.0-202103171728.p0.git.2502.8383c08.el8 - 4.7.0-202105140104.p0.git.8b61936.el8
openshift-clients (Red Hat package): 4.7.0-202103191426.p0.git.3953.f3a7513.el7 - 4.7.0-202105111743.p0.git.95881af.el8
External linkshttp://access.redhat.com/errata/RHSA-2021:2555
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
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) Input validation error
EUVDB-ID: #VU53609
Risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-25217
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack or gain access to sensitive information.
The vulnerability exists due to insufficient validation of options data stored in DHCP leases. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack or gain access to sensitive information.
Both dhcpd and dhclient are affected by the vulnerability.
Install updates from vendor's website.
Red Hat OpenShift Container Platform: 4.7.0 - 4.7.18
cri-o (Red Hat package): 1.20.2-3.rhaos4.7.gitfecc319.el7 - 1.20.2-12.rhaos4.7.git9f7be76.el8
openshift-kuryr (Red Hat package): 4.7.0-202103171728.p0.git.2502.8383c08.el8 - 4.7.0-202105140104.p0.git.8b61936.el8
openshift-clients (Red Hat package): 4.7.0-202103191426.p0.git.3953.f3a7513.el7 - 4.7.0-202105111743.p0.git.95881af.el8
External linkshttp://access.redhat.com/errata/RHSA-2021:2555
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
