The crypto/x509 package of Go before 1.10.6 and 1.11.x before 1.11.3 does not limit the amount of work performed for each chain verification, which might allow attackers to craft pathological inputs leading to a CPU denial of service. Go TLS servers accepting client certificates and TLS clients are affected.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-16875 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform Operational Tools 9 | golang | Not affected |
| Red Hat OpenShift Enterprise 3.2 | Release | Not affected |
| Red Hat OpenShift Container Platform 3.9 | Release | Affected |
| Red Hat OpenShift Container Platform 3.7 | Release | Affected |
| Red Hat OpenShift Container Platform 3.6 | Release | Affected |
| Red Hat OpenShift Container Platform 3.5 | Release | Affected |
| Red Hat OpenShift Container Platform 3.4 | Release | Affected |
| Red Hat OpenShift Container Platform 3.3 | Release | Not affected |
| Red Hat OpenShift Container Platform 3.11 | Release | Affected |
| Red Hat OpenShift Container Platform 3.10 | Release | Affected |
| Red Hat Gluster Storage 3 | golang | Affected |
| Red Hat Enterprise Linux OpenStack Platform 8.0 Operational Tools for RHEL 7 | golang | Not affected |
| Red Hat Enterprise Linux 7 | golang | Will not fix |
| Red Hat Ceph Storage 3 | golang | Affected |
| Red Hat Ceph Storage 2 | golang | Affected |
Vulmon