Quantum Secular Labs / Blog / Advisories

CVE-2017-4984: Emc Vnx2 Firmware: Command injection

CVE-2017-4984 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists 2 affected products, including Emc Vnx2 Firmware. 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 EMC VNX2 versions prior to OE for File 8.1.9.211 and VNX1 versions prior to OE for File 7.1.80.8, an unauthenticated remote attacker may be able to elevate their permissions to root through a command injection. This may potentially be exploited by an attacker to run arbitrary code with root-level privileges on the targeted VNX Control Station system, aka remote code execution.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/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-77: Improper Neutralization of Special Elements used in a Command

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Affected products

Emc Vnx2 Firmware: all versions listed by NVD
Emc Vnx1 Firmware: all versions listed by NVD