Java Deserialization in Solarwinds Virtualization Manager 6.3.1

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: Deserialization of Untrusted Data [CWE-502]
CVE Reference: CVE-2016-3642
Risk Level: High
CVSSv2 Base Score: 10 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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 Java RMI service. This attack does not require authentication of any kind.

1) Deserialization of Untrusted Data in Solarwinds Virtualization Manager: CVE-2016-3642

The vulnerability exists due to the deserialization of untrusted data in the RMI service running on port 1099/TCP.
A remote attacker can execute operating system commands as an unprivileged user.

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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 usage of the "ysoserial" tool to execute operating system commands against the 10.10.10.10 host.

java -cp ysoserial-0.0.2-all.jar ysoserial.RMIRegistryExploit 10.10.10.10 1099 CommonsCollections1 'OS COMMANDS HERE'

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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.
[2] Common Weakness Enumeration (CWE) - http://cwe.mitre.org/ - Targeted to developers and security practitioners, CWE is a formal list of software weakness types.