OpenShift Service Mesh 1.1 update for servicemesh and servicemesh-proxy
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2021-32777 CVE-2021-32779 CVE-2021-32781 CVE-2021-39155 CVE-2021-39156 |
| CWE-ID | CWE-285 CWE-200 CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
servicemesh-proxy (Red Hat package) Operating systems & Components / Operating system package or component servicemesh (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
1) Improper Authorization
EUVDB-ID: #VU56106
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-2021-32777
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authorization process.
The vulnerability exists due to an error in ext-authz extension when sending request headers to the external authorization service in Envoy. The application sends only the last header instead of merging multiple value headers according to the HTTP specification. A remote attacker can bypass authorization process and gain unauthorized access to the application, if ext-authz extension is used.
Install updates from vendor's website.
servicemesh-proxy (Red Hat package): before 1.1.17-2.el8
servicemesh (Red Hat package): before 1.1.17-3.el8
CPE2.3- cpe:2.3:o:red_hat:servicemesh-proxy_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:3273
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) Information disclosure
EUVDB-ID: #VU56149
Risk: High
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-32779
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to incorrectly handling of URI "#fragment" element as part of the path element. A remote attacker can send a specially crafted request and gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
servicemesh-proxy (Red Hat package): before 1.1.17-2.el8
servicemesh (Red Hat package): before 1.1.17-3.el8
CPE2.3- cpe:2.3:o:red_hat:servicemesh-proxy_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:3273
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.
3) Use-after-free
EUVDB-ID: #VU56107
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-32781
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error when processing HTTP requests and responses in Envoy. A remote attacker can send a specially crafted HTTP request or response to the application, trigger a use-after-free error and perform a denial of service attack.
Successful exploitation of the vulnerability requires presence of extension that can modify and increase the size of request or response bodies.
MitigationInstall updates from vendor's website.
servicemesh-proxy (Red Hat package): before 1.1.17-2.el8
servicemesh (Red Hat package): before 1.1.17-3.el8
CPE2.3- cpe:2.3:o:red_hat:servicemesh-proxy_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:3273
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.
4) Improper Authorization
EUVDB-ID: #VU56150
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-39155
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authorization check.
The vulnerability exists due to case insensitive host comparison. A remote attacker can send a specially crafted request to bypass authorization on the target system.
MitigationInstall updates from vendor's website.
servicemesh-proxy (Red Hat package): before 1.1.17-2.el8
servicemesh (Red Hat package): before 1.1.17-3.el8
CPE2.3- cpe:2.3:o:red_hat:servicemesh-proxy_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:3273
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.
5) Improper Authorization
EUVDB-ID: #VU56151
Risk: High
CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-39156
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to insufficient authorization checks. A remote attacker can send a specially crafted HTTP request with #fragment in the path and bypass authorization on the target system.
MitigationInstall updates from vendor's website.
servicemesh-proxy (Red Hat package): before 1.1.17-2.el8
servicemesh (Red Hat package): before 1.1.17-3.el8
CPE2.3- cpe:2.3:o:red_hat:servicemesh-proxy_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
- cpe:2.3:o:red_hat:servicemesh_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2021:3273
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.
