bugtraq - Multiple exposures in Sophos UTM

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Date: Fri, 30 Sep 2016 11:33:31 +0200 (CEST)
From: Tim Schughart <t.schughart@...sec-networks.com>
To: fulldisclosure@...lists.org, bugtraq@...urityfocus.com,
  webappsec@...urityfocus.com
Cc: info@...sec-networks.com, k.pham@...sec-networks.com
Subject: Multiple exposures in Sophos UTM

Hello @all, 

together with my colleague we found two uncritical vulnerabilities you'll find below.

Product: Sophos UTM
Vendor: Sophos ltd. 

Internal reference: ? (Bug ID)
Vulnerability type: Information Disclosure
Vulnerable version: 9.405-5, 9.404-5 and possible other versions affected (not tested)
Vulnerable component: Frontend
Report confidence: yes
Solution status: Not fixed by Vendor, no further responses from vendor. 
Fixed versions: -
Researcher credits: Tim Schughart & Khanh Quoc Pham of ProSec Networks
Vendor notification: 2016-09-01
Solution date: - 
Public disclosure: 2016-09-30
CVE reference: CVE-2016-7397
CVSSv3: 6.7 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

Report timeline:
2016-09-01: Contacted Vendor, vendor acknowledged, no further response 
2016-09-12: Contacted Vendor again, started to fix 
2016-09-30: Contacted Vendor again, because there has been no response to our request and our initial told disclosing date, no response again. 
2016-09-30: Public Disclosure. 

Vulnerability Details:
The password is reflected to DOM and is readable through the "value" field of the SMTP user settings in notifications tab. You have to be authenticated to access the configuration tab. 

Risk:
An attacker gets access to the configured mailbox. Because of Sophos UTM is a multi user system, this is a problem in bigger company environments with splitted admin rights. The surface scope is changed, because in bigger environments you are getting access to the configured mailbox, which results in an integrity loss. 

Steps to reproduce:
See vulnerability details.

--

Product: Sophos UTM
Vendor: Sophos ltd. 

Internal reference: ? (Bug ID)
Vulnerability type: Information Disclosure
Vulnerable version: 9.405-5, 9.404-5 and possible other versions affected (not tested)
Vulnerable component: Frontend
Report confidence: ?
Solution status: Not fixed by Vendor
Fixed versions: -
Researcher credits: Tim Schughart & Khanh Quoc Pham of ProSec Networks
Vendor notification: 2016-09-01
Solution date: -
Public disclosure: 2016-10-01
CVE reference: CVE-2016-7442 
CVSSv3: 6.7 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

Vulnerability Details:
The password is reflected to DOM and is readable through the "value" field of the proxy user settings in the system settings / scan settings / anti spam. You have to be authenticated to access the configuration tab.

Risk:
An attacker gets access to the configured proxy user. Because of Sophos UTM is a multi user system, this is a problem in bigger company environments with splitted admin rights. The surface scope is changed, because in bigger environments you are getting access to the configured proxy user, which results in an privilege escalation. 

Steps to reproduce:
See vulnerability details. 

Best regards / Mit freundlichen Grüßen 

Tim Schughart 
CEO / Geschäftsführer  

--
ProSec Networks e.K. 
Ellingshohl 82  
56077 Koblenz 

Website: https://www.prosec-networks.com 
E-Mail: t.schughart@...sec.networks.com 
Mobile: +49 (0)157 7901 5826
Phone: +49 (0)261 450 930 90   

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