It was found that xterm.js does not sanitize terminal escape sequences in browser terminals allowing for execution of arbitrary commands. An attacker could exploit this by convincing a user with a xterm.js browser terminal to display an escape sequence by, for example, reading a from a log file containing attacker-controlled input.
Find out more about CVE-2019-0542 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the ose-console container in OpenShift Container Platform 3.11, which provides a web console for opening in-browser terminals in cluster pods. Successful exploitation of this issue would require an attacker to convince an authorized user to open an in-browser terminal on a target pod and execute a command that prints attacker-controlled input. Red Hat Product Security have rated this issue as having security impact of Moderate. A future update may address this issue.
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:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | openshift-enterprise-console-container | Affected |
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