Multiple vulnerabilities in OpenShift Container Platform 4.7
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-39241 CVE-2021-40346 |
| CWE-ID | CWE-20 CWE-444 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
haproxy (Red Hat package) Operating systems & Components / Operating system package or component 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 openshift-ansible (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 atomic-openshift-service-idler (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 information about 2 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU55970
Risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-39241
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input in HAProxy. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.
The attacker can abuse such behavior to bypass implemented security restrictions and perform unauthorized actions against the web application behind the HAProxy.
MitigationInstall updates from vendor's website.
haproxy (Red Hat package): 2.0.13-3.el7 - 2.0.16-4.el8
Red Hat OpenShift Container Platform: 4.7.0 - 4.7.40
openshift (Red Hat package): 4.7.0-202103181538.p0.git.97109.7576cdc.el7 - 4.7.0-202111192046.p0.gaa025a0.assembly.stream.el8
cri-o (Red Hat package): 1.20.6-3.rhaos4.7.git4603183.el7 - 1.20.6-3.rhaos4.7.git4603183.el8
openshift-ansible (Red Hat package): 4.7.0-202103181433.p0.git.0.729df27.el7 - 4.7.0-202107292046.p0.git.e1b19c2.assembly.stream.el7
openshift-kuryr (Red Hat package): 4.7.0-202103171728.p0.git.2502.8383c08.el8 - 4.7.0-202107291238.p0.git.c7654fb.assembly.stream.el8
openshift-clients (Red Hat package): 4.7.0-202103191426.p0.git.3953.f3a7513.el7 - 4.7.0-202107292242.p0.git.8b4b094.assembly.stream.el8
atomic-openshift-service-idler (Red Hat package): 4.7.0-202104260636.p0.git.330c6ef.el8 - 4.7.0-202107291238.p0.git.39cfc66.assembly.stream.el8
CPE2.3- cpe:2.3:o:red_hat:haproxy_redhat_package:2.0.13-3.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:haproxy_redhat_package:2.0.13-3.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:haproxy_redhat_package:2.0.16-2.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:red_hat_openshift_container_platform:4.7.40:*:*:*:*:*:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.7.0-202103181538.p0.git.97109.7576cdc.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.7.0-202103181538.p0.git.97109.7576cdc.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.7.0-202104090228.p0.git.97111.77863f8.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.20.6-3.rhaos4.7.git4603183.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.20.6-3.rhaos4.7.git4603183.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift-ansible_redhat_package:4.7.0-202103181433.p0.git.0.729df27.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift-kuryr_redhat_package:4.7.0-202103171728.p0.git.2502.8383c08.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift-clients_redhat_package:4.7.0-202103191426.p0.git.3953.f3a7513.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:atomic-openshift-service-idler_redhat_package:4.7.0-202104260636.p0.git.330c6ef.el8:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2022:0114
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.
2) Inconsistent interpretation of HTTP requests
EUVDB-ID: #VU56401
Risk: Medium
CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2021-40346
CWE-ID:
CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to preform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP/2 requests within the htx_add_header() and htx_add_trailer() functions when processing HTTP header name length encoding in the HTX representation. A remote attacker can send a specially crafted HTTP request to the server and smuggle HTTP headers.
Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.
MitigationInstall updates from vendor's website.
haproxy (Red Hat package): 2.0.13-3.el7 - 2.0.16-4.el8
Red Hat OpenShift Container Platform: 4.7.0 - 4.7.40
openshift (Red Hat package): 4.7.0-202103181538.p0.git.97109.7576cdc.el7 - 4.7.0-202111192046.p0.gaa025a0.assembly.stream.el8
cri-o (Red Hat package): 1.20.6-3.rhaos4.7.git4603183.el7 - 1.20.6-3.rhaos4.7.git4603183.el8
openshift-ansible (Red Hat package): 4.7.0-202103181433.p0.git.0.729df27.el7 - 4.7.0-202107292046.p0.git.e1b19c2.assembly.stream.el7
openshift-kuryr (Red Hat package): 4.7.0-202103171728.p0.git.2502.8383c08.el8 - 4.7.0-202107291238.p0.git.c7654fb.assembly.stream.el8
openshift-clients (Red Hat package): 4.7.0-202103191426.p0.git.3953.f3a7513.el7 - 4.7.0-202107292242.p0.git.8b4b094.assembly.stream.el8
atomic-openshift-service-idler (Red Hat package): 4.7.0-202104260636.p0.git.330c6ef.el8 - 4.7.0-202107291238.p0.git.39cfc66.assembly.stream.el8
CPE2.3- cpe:2.3:o:red_hat:haproxy_redhat_package:2.0.13-3.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:haproxy_redhat_package:2.0.13-3.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:haproxy_redhat_package:2.0.16-2.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.7.0-202103181538.p0.git.97109.7576cdc.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.7.0-202103181538.p0.git.97109.7576cdc.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift_redhat_package:4.7.0-202104090228.p0.git.97111.77863f8.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.20.6-3.rhaos4.7.git4603183.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:cri-o_redhat_package:1.20.6-3.rhaos4.7.git4603183.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift-ansible_redhat_package:4.7.0-202103181433.p0.git.0.729df27.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift-kuryr_redhat_package:4.7.0-202103171728.p0.git.2502.8383c08.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:openshift-clients_redhat_package:4.7.0-202103191426.p0.git.3953.f3a7513.el7:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:atomic-openshift-service-idler_redhat_package:4.7.0-202104260636.p0.git.330c6ef.el8:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2022:0114
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. However, proof of concept for this vulnerability is available.
