Denial of service in Red Hat OpenShift Service Mesh
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-32778 |
| CWE-ID | CWE-834 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
servicemesh-operator (Red Hat package) Operating systems & Components / Operating system package or component servicemesh (Red Hat package) Operating systems & Components / Operating system package or component servicemesh-prometheus (Red Hat package) Operating systems & Components / Operating system package or component servicemesh-proxy (Red Hat package) Operating systems & Components / Operating system package or component servicemesh-ratelimit (Red Hat package) Operating systems & Components / Operating system package or component servicemesh-grafana (Red Hat package) Operating systems & Components / Operating system package or component OpenShift Service Mesh Server applications / Virtualization software |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Excessive Iteration
EUVDB-ID: #VU56147
Risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-32778
CWE-ID:
CWE-834 - Excessive Iteration
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the Envoy is configured with high limit on H/2 concurrent streams. A remote attacker can cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
servicemesh-operator (Red Hat package): 0.12.0-7.el8 - 2.0.5-3.el8
servicemesh (Red Hat package): 0.12.0-8.el8 - 2.0.5-3.el8
servicemesh-prometheus (Red Hat package): 2.7.2-5.el8 - 2.14.0-20.el8
servicemesh-proxy (Red Hat package): 0.12.0-3.el8
OpenShift Service Mesh: before 2.1.0
servicemesh-ratelimit (Red Hat package): before 2.1.0-1.el8
servicemesh-grafana (Red Hat package): before 7.2.1-2.el8
CPE2.3- cpe:2.3:o:red_hat:servicemesh-operator_redhat_package:0.12.0-7.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh-operator_redhat_package:2.0.5-3.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:0.12.0-8.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:2.0.5-3.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh-prometheus_redhat_package:2.7.2-5.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh-prometheus_redhat_package:2.7.2-14.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh-prometheus_redhat_package:2.7.2-22.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh-proxy_redhat_package:0.12.0-3.el8:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:a:red_hat:openshift_service_mesh:*:*:*:*:*:*:*:*
- cpe:2.3:o:red_hat:servicemesh-ratelimit_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh-grafana_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHEA-2021:4051
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.
