CVE-2019-11287
Description
A resource-consumption flaw was identified in the rabbitmq-server web management plugin. Utilizing a malicious 'X-Reason' HTTP header, a remote attacker could insert a malicious Erlang format string which will expand and consume heap memory, resulting in a crash. The highest threat from this vulnerability is system availability.
Statement
Red Hat Ansible Tower and Red Hat CloudForms are not vulnerable as they do not expose the RabbitMQ management interface by default. In Red Hat OpenStack Platform 13, the management interface was not enabled by default. So, although the flaw code was packaged, its impact for this version has been lowered to Moderate.
Mitigation
This flaw can be mitigated by disabling the Web Management plugin: rabbitmq-plugins disable rabbitmq_management.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert: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).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | 7.5 | 4.5 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | None | None | High |
| User Interaction | None | None | Required |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | None |
| Integrity Impact | None | None | None |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:H
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