Quantum Secular Labs / Blog / Advisories

CVE-2018-1183: Dell Emc Smis: XML external entity injection

CVE-2018-1183 is rated critical with a CVSS v3.0 base score of 9.8 and affects Dell Emc Smis, along with 3 other products in NVD’s configuration data. 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 Dell EMC Unisphere for VMAX Virtual Appliance versions prior to 8.4.0.8, Dell EMC Solutions Enabler Virtual Appliance versions prior to 8.4.0.8, Dell EMC VASA Provider Virtual Appliance versions prior to 8.4.0.512, Dell EMC SMIS versions prior to 8.4.0.6, Dell EMC VMAX Embedded Management (eManagement) versions prior to and including 1.4.0.347, Dell EMC VNX2 Operating Environment (OE) for File versions prior to 8.1.9.231, Dell EMC VNX2 Operating Environment (OE) for Block versions prior to 05.33.009.5.231, Dell EMC VNX1 Operating Environment (OE) for File versions prior to 7.1.82.0, Dell EMC VNX1 Operating Environment (OE) for Block versions prior to 05.32.000.5.225, Dell EMC VNXe3200 Operating Environment (OE) all versions, Dell EMC VNXe1600 Operating Environment (OE) versions prior to 3.1.9.9570228, Dell EMC VNXe 3100/3150/3300 Operating Environment (OE) all versions, Dell EMC ViPR SRM versions 3.7, 3.7.1, 3.7.2 (only if using Dell EMC Host Interface for Windows), Dell EMC ViPR SRM versions 4.0, 4.0.1, 4.0.2, 4.0.3 (only if using Dell EMC Host Interface for Windows), Dell EMC XtremIO versions 4.x, Dell EMC VMAX eNAS version 8.x, Dell EMC Unity Operating Environment (OE) versions prior to 4.3.0.1522077968, ECOM is affected by a XXE injection vulnerability due to the configuration of the XML parser shipped with the product. XXE Injection attack may occur when XML input containing a reference to an external entity (defined by the attacker) is processed by an affected XML parser. XXE Injection may allow attackers to gain unauthorized access to files containing sensitive information or may be used to cause denial-of-service.

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-611: Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Affected products

Dell Emc Smis: before 8.4.0.6
Dell Emc Solutions Enabler Virtual Appliance: before 8.4.0.8
Dell Emc Unisphere: before 8.4.0.8
Dell Emc Unity Operating Environment: before 4.3.0.1522077968
Dell Emc Vasa Provider Virtual Appliance: before 8.4.0.512
Dell Emc Vipr Srm: all versions listed by NVD; 3.7; 3.7.1; 3.7.2; 4.0; 4.0.1; 4.0.2; 4.0.3
Dell Emc Vmax Embedded Management: up to and including 1.4.0.347
Dell Emc Vmax Enas: 8.0; 8.0.1
Dell Emc Vnx1 Operating Environment: 05.32.000.5.225; 7.1.82.0
Dell Emc Vnx2 Operating Environment: before 05.33.009.5.231; before 8.1.9.231
Dell Emc Vnxe1600 Operating Environment: before 3.1.9.9570228
Dell Emc Vnxe3200 Operating Environment: all versions listed by NVD
Dell Emc Xtremio: 4.0; 4.0.2
Dell Emc Vnxe 3100 Operating Environment: all versions listed by NVD
Dell Emc Vnxe 3150 Operating Environment: all versions listed by NVD