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Dell EMC Unity Authorization Bypass / XSS / URL Redirection

Dell EMC Unity Authorization Bypass / XSS / URL Redirection
Posted Sep 19, 2018
Site emc.com

Dell EMC Unity Operating Environment (OE) versions prior to and Dell EMC UnityVSA Operating Environment (OE) versions prior to suffer from authorization bypass, cross site scripting, and url redirection vulnerabilities.

tags | advisory, vulnerability, xss
advisories | CVE-2018-1246, CVE-2018-1250, CVE-2018-1251
MD5 | 7aac6e2dee0084b0d66042b08eb4c2c2

Dell EMC Unity Authorization Bypass / XSS / URL Redirection

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DSA-2018-101: Dell EMC Unity Family Multiple Vulnerabilities

Dell EMC Identifier: DSA-2018-101

CVE Identifier: CVE-2018-1246, CVE-2018-1250, CVE-2018-1251

Severity Rating: CVSS v3 Base Score: See below for individual CVEs

Affected products:
Dell EMC Unity Operating Environment (OE) versions prior to
Dell EMC UnityVSA Operating Environment (OE) versions prior to

Dell EMC Unity requires an update to address multiple security vulnerabilities that may potentially be exploited by malicious users to compromise the affected system.


* Authorization Bypass (CVE-2018-1250)

Dell EMC Unity and UnityVSA versions prior to contains an Authorization Bypass vulnerability. A remote authenticated user could potentially exploit this vulnerability to read files in NAS server by directly interacting with certain APIs of Unity OE, bypassing Role-Based Authorization control implemented only in Unisphere GUI.
CVSS v3 Base Score: 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

* Reflected Cross-site Scripting (XSS) (CVE-2018-1246)

Dell EMC Unity contains reflected cross-site scripting vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability by tricking a victim application user to supply malicious HTML or Java Script code to Unisphere, which is then reflected back to the victim and executed by the web browser.
CVSS v3 Base Score: 4.7 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N)

* URL Redirection (CVE-2018-1251)

Dell EMC Unity and UnityVSA versions prior to contains a URL Redirection vulnerability. A remote unauthenticated attacker could potentially exploit this vulnerability to redirect Unity users to arbitrary web URLs by tricking the victim user to click on a maliciously crafted Unisphere URL. Attacker could potentially phish information, including Unisphere users' credentials, from the victim once they are redirected.
CVSS v3 Base Score: 8.3 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L)

The following Dell EMC Unity release contains resolutions to this vulnerability
* Dell EMC Unity Operating Environment (OE) version
* Dell EMC UnityVSA Operating Environment (OE) versions

To take advantage of the latest security fixes and enhancements, Dell EMC recommends upgrading to the latest Unity OE code.
Customers can refer to Dell EMC target code information at: https://support.emc.com/docu39695_Target_Revisions_and_Adoption_Rates.pdf?language=en_US&language=en_US.

Link to remedies:

Registered Dell EMC Support customers can download Unity software from the Dell EMC Online Support web site.

Severity Rating

For an explanation of Severity Ratings, refer to Dell EMC Knowledgebase article 468307 (https://support.emc.com/kb/468307). Dell EMC recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability.

Legal Information

Read and use the information in this Dell EMC Security Advisory to assist in avoiding any situation that might arise
from the problems described herein. If you have any questions regarding this advisory, contact Dell EMC Technical
Support (https://support.emc.com/servicecenter/contactEMC/). Dell EMC distributes Dell EMC Security Advisories, in
order to bring to the attention of users of the affected Dell EMC products, important security information. Dell EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. Dell EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall Dell EMC or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Dell EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.

Dell Product Security Incident Response Team




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