Schneider Electric FlexNet Publisher up to 11.14.1.0 on Windows Licensing Service Named Pipe memory corruption

Summaryinfo

A vulnerability identified as critical has been detected in Schneider Electric FlexNet Publisher up to 11.14.1.0 on Windows. The affected element is an unknown function of the component Licensing Service. This manipulation as part of Named Pipe causes memory corruption. The identification of this vulnerability is CVE-2016-10395. The attack can only be executed locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Schneider Electric FlexNet Publisher up to 11.14.1.0 on Windows (SCADA Software) and classified as critical. Affected by this vulnerability is some unknown functionality of the component Licensing Service. The manipulation as part of a Named Pipe leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In FlexNet Publisher versions before Luton SP1 (11.14.1.1) running FlexNet Publisher Licensing Service on Windows platform, a boundary error related to a named pipe within the FlexNet Publisher Licensing Service can be exploited to cause an out-of-bounds memory read access and subsequently execute arbitrary code with SYSTEM privileges.

The bug was discovered 06/07/2017. The weakness was shared 06/15/2017 (Website). It is possible to read the advisory at secuniaresearch.flexerasoftware.com. This vulnerability is known as CVE-2016-10395 since 05/30/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370599 (Tableau Server and Desktop Elevation of privilege Vulnerability (Important-ADV-2017-017)).

Upgrading to version 11.14.1.1 eliminates this vulnerability.

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Productinfo

Type

• SCADA Software

Vendor

• Schneider Electric

Name

• FlexNet Publisher

Version

• 11.14.0
• 11.14.1.0

License

• commercial

Website

• Vendor: https://www.schneider-electric.com/

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