CVE-2018-14649
Public on
Last Modified:
Description
It was found that rbd-target-api service provided by ceph-iscsi-cli was running in debug mode. An unauthenticated attacker could use this to remotely execute arbitrary code and escalate privileges.
Statement
This issue affects the versions of ceph-iscsi-cli as shipped with Red Hat Ceph Storage 2 and 3. This flaw does not affect python-werkzeug library. It depends on if application uses python-werkzeug library with debug mode enabled.
Mitigation
To stop werkzeug debug mode started by rbd-target-api which is provided by ceph-iscsi-cli:
1. ~]# systemctl stop rbd-target-api
2. ~]# vi /usr/bin/rbd-target-api
# Start the API server
...
737 app.run(host='0.0.0.0',
738 port=settings.config.api_port,
739 debug=True, <==== change this to debug=False
use_evalex=False, <=== add this line to disable debugger code execution
740 use_reloader=False,
741 ssl_context=context)
...
after changes it should be
# Start the API server
...
737 app.run(host='0.0.0.0',
738 port=settings.config.api_port,
739 debug=False,
use_evalex=False,
740 use_reloader=False,
741 ssl_context=context)
...
3. ~]# systemctl start rbd-target-api
4. Limit exposure of port 5000/tcp: This port should be opened to trusted hosts which require to run 'gwcli'.
Additional information
- Bugzilla 1632078: ceph-iscsi-cli: rbd-target-api service runs in debug mode allowing for remote command execution
- CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
- FAQ: Frequently asked questions about CVE-2018-14649
Common Vulnerability Scoring System (CVSS) Score Details
Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
Red Hat | NVD | |
---|---|---|
CVSS v3 Base Score | 9.8 | 9.8 |
Attack Vector | Network | Network |
Attack Complexity | Low | Low |
Privileges Required | None | None |
User Interaction | None | None |
Scope | Unchanged | Unchanged |
Confidentiality Impact | High | High |
Integrity Impact | High | High |
Availability Impact | High | High |
CVSS v3 Vector
Red Hat: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Frequently Asked Questions
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