Vulnerability Note VU#978652
Bomgar Remote Support Portal deserializes untrusted data
Original Release date: 05 May 2015 | Last revised: 05 May 2015

Overview
Bomgar Remote Support version 14.3.1 and possibly earlier versions deserialize untrusted data without sufficient validation, allowing an attacker to potentially execute arbitrary PHP code.

Description
CWE-502: Deserialization of Untrusted Data
Bomgar Remote Support version 14.3.1 and possibly earlier versions deserialize untrusted data without sufficient validation. An unauthenticated attacker can inject arbitrary input to at least one vulnerable PHP file, and authenticated attackers can inject arbitrary input to multiple vulnerable PHP files. When malicious data is deserialized, arbitrary PHP code may be executed in the context of the PHP server process.

Impact
A remote, unauthenticated attacker may be able to execute arbitrary PHP code in the context of the Bomgar Remote Support portal application.

Solution
Apply an Update

Bomgar advises system administrators to update their Bomgar Remote Support appliances to the latest version of Bomgar 15.1.1 or apply a patch that is available for download.

Additionally, please consider the following workaround:
Restrict network access

Restrict access to Bomgar Support Portal to trusted hosts and networks until upgrading or applying the patch.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedBomgarAffected13 Feb 201505 May 2015If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

Group
Score
Vector

Base
6.8
AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal
5.3
E:POC/RL:OF/RC:C

Environmental
1.3
CDP:ND/TD:L/CR:ND/IR:ND/AR:ND

References

http://www.bomgar.com/
https://help.bomgar.com/ssc/Download.aspx?id=2ada4ca5-8308-409d-852b-f1786b8f1d51

Credit

Thanks to Markus Wulftange for reporting this vulnerability.
This document was written by Todd Lewellen.

Other Information

CVE IDs:
CVE-2015-0935

Date Public:
05 May 2015

Date First Published:
05 May 2015

Date Last Updated:
05 May 2015

Document Revision:
35

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