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CVE-2018-21025: Centreon Vm: Improper Privilege Management

CVE-2018-21025 is rated critical with a CVSS v3.1 base score of 9.8 and affects Centreon Vm. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

In Centreon VM through 19.04.3, centreon-backup.pl allows attackers to become root via a crafted script, due to incorrect rights of sourced configuration files.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
• Attack complexity: Low. No special conditions; the attack can be repeated reliably.
• Privileges required: None. No account or prior access is needed.
• User interaction: None. No action from any user is needed.
• Scope: Unchanged. Impact stays within the vulnerable component.
• Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
• Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
• Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-269: Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected products

• Centreon Vm: up to and including 19.04.3

References

• http://www.openwall.com/lists/oss-security/2019/10/09/2
• https://github.com/centreon/centreon/issues/7082
• https://www.openwall.com/lists/oss-security/2019/10/08/1