full-disclosure - [FD] CVE-2016-3643 - Misconfiguration of sudo in Solarwinds Virtualization Manager

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Message-ID: <DM3PR17MB0540FF515B36A74DD86EE192D0550@DM3PR17MB0540.namprd17.prod.outlook.com>
Date: Wed, 15 Jun 2016 13:57:55 +0000
From: Nate Kettlewell <nate@...thsecurity.com>
To: "fulldisclosure@...lists.org" <fulldisclosure@...lists.org>
Subject: [FD] CVE-2016-3643 - Misconfiguration of sudo in Solarwinds
 Virtualization Manager

Product: Solarwinds Virtualization Manager

Vendor: Solarwinds
Vulnerable Version(s): < 6.3.1
Tested Version: 6.3.1

Vendor Notification: April 25th, 2016
Vendor Patch Availability to Customers: June 1st, 2016
Public Disclosure: June 14th, 2016

Vulnerability Type: Security Misconfiguration
CVE Reference: CVE-2016-3643
Risk Level: High
CVSSv3 Base Score: 7.8 (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H/RL:W/RC:C/CR:M/IR:M/AR:M/MAV:L/MAC:L/MPR:L/MUI:N/MS:C/MC:H/MI:H/MA:H)
Solution Status: Solution Available

Discovered and Provided: Nate Kettlewell, Depth Security ( https://www.depthsecurity.com/ )

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Advisory Details:

Depth Security discovered a vulnerability in Solarwinds Virtualization Manager appliance. 
This attack requires a user to have an operating system shell on the vulnerable appliance.

1) Misconfiguration of sudo in Solarwinds Virtualization Manager: CVE-2016-3643

The vulnerability exists due to the miconfiguration of sudo in that it allows any local user to use sudo to execute commands as the superuser.
A local attacker can obtain root privileges to the operating system regardless of privilege level.

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Solution:

Solarwinds has released a hotfix to remediate this vulnerability on existing installations. 

This flaw as well as several others have been corrected and that release has been put into manufacturing for new appliances.

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Proof of Concept:

The following is an example of the commands necessary for a low-privileged user to dump the contents of the "/etc/shadow" file by using sudo.

sudo cat /etc/passwd

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References:

[1] Solarwinds Virtualization Manager- http://www.solarwinds.com/virtualization-manager - Solarwinds Virtualization Manager provides monitoring and remediation for virtualized environments.

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