A Stack-based Buffer Overflow issue was discovered in Schneider Electric InduSoft Web Studio v8.0 SP2 Patch 1 and prior versions, and InTouch Machine Edition v8.0 SP2 Patch 1 and prior versions. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution with high privileges.

A Missing Authentication for Critical Function issue was discovered in Schneider Electric InduSoft Web Studio v8.0 SP2 or prior, and InTouch Machine Edition v8.0 SP2 or prior. InduSoft Web Studio provides the capability for an HMI client to trigger script execution on the server for the purposes of performing customized calculations or actions. A remote malicious entity could bypass the server authentication and trigger the execution of an arbitrary command. The command is executed under high privileges and could lead to a complete compromise of the server.

Schneider Electric InduSoft Web Studio before 7.1.3.5 Patch 5 and Wonderware InTouch Machine Edition through 7.1 SP3 Patch 4 use cleartext for project-window password storage, which allows local users to obtain sensitive information by reading a file.

Schneider Electric InduSoft Web Studio before 7.1.3.4 SP3 Patch 4 and InTouch Machine Edition 2014 before 7.1.3.4 SP3 Patch 4 transmit cleartext credentials, which allows remote attackers to obtain sensitive information by sniffing the network.

Schneider Electric InduSoft Web Studio before 7.1.3.4 SP3 Patch 4 and InTouch Machine Edition 2014 before 7.1.3.4 SP3 Patch 4 provide an HMI user interface that lists all valid usernames, which makes it easier for remote attackers to obtain access via a brute-force password-guessing attack.

Schneider Electric InduSoft Web Studio before 7.1.3.4 SP3 Patch 4 and InTouch Machine Edition 2014 before 7.1.3.4 SP3 Patch 4 store cleartext OPC User credentials in a configuration file, which allows local users to obtain sensitive information by reading this file.

Schneider Electric InduSoft Web Studio before 7.1.3.4 SP3 Patch 4 and InTouch Machine Edition 2014 before 7.1.3.4 SP3 Patch 4 rely on a hardcoded cleartext password to control read access to Project files and Project Configuration files, which makes it easier for local users to obtain sensitive information by discovering this password.

Invensys Wonderware InTouch 2012 R2 and earlier and Siemens ProcessSuite use a weak encryption algorithm for data in Pssecurity.ini, which makes it easier for local users to discover passwords by reading this file.

The SuiteLink Service (aka slssvc.exe) in WonderWare SuiteLink before 2.0 Patch 01, as used in WonderWare InTouch 8.0, allows remote attackers to cause a denial of service (NULL pointer dereference and service shutdown) and possibly execute arbitrary code via a large length value in a Registration packet to TCP port 5413, which causes a memory allocation failure.

Invensys Wonderware InTouch 8.0 creates a NetDDE share with insecure permissions (Everyone/Full Control), which allows remote authenticated attackers, and possibly anonymous users, to execute arbitrary programs.