Bug 1802381 (CVE-2020-1741)
| Summary: | CVE-2020-1741 openshift-ansible: cors allowed origin allows changing url protocol | ||
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| Product: | [Other] Security Response | Reporter: | Jason Shepherd <jshepherd> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | bmontgom, dahernan, eparis, jburrell, jokerman, nstielau, security-response-team, sponnaga |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in openshift-ansible. OpenShift Container Platform (OCP) 3.11 is too permissive in the way it specified CORS allowed origins during installation. An attacker, able to man-in-the-middle the connection between the user's browser and the openshift console, could use this flaw to perform a phishing attack. The main threat from this vulnerability is data confidentiality.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-08-27 13:17:31 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1804302, 1802394 | ||
| Bug Blocks: | 1797390 | ||
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Description
Jason Shepherd
2020-02-13 03:39:09 UTC
Mitigation: Ensure that the corsAllowedOrigin definition within master-config.yaml contains elements in the form ~~~ corsAllowedOrigins: - ^(?i)https://my\.subdomain\.domain\.com(:|\z) ~~~ and not the form ~~~ corsAllowedOrigins: - (?i)//my\.subdomain\.domain\.com(:|\z) ~~~ as the first will permit cross origin requests only if the host and protocol matches, whereas the second will permit a downgrade to http protocol for example. Filed a bug to get the documentation updated: https://bugzilla.redhat.com/show_bug.cgi?id=1813799 This issue has been addressed in the following products: Red Hat OpenShift Container Platform 3.11 Via RHSA-2020:3541 https://access.redhat.com/errata/RHSA-2020:3541 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-1741 |