Some vulnerabilities have been discovered in LINGO, which can be exploited by malicious, local users to gain escalated privileges and by malicious people to compromise a user's system.
1) The application loads libraries (e.g. myuser.dll) in an insecure manner, which can be exploited to load arbitrary libraries by tricking a user into e.g. opening a LINGO document (.ltf) located on a remote WebDAV or SMB share.
Successful exploitation allows execution of arbitrary code.
2) The application is installed in a directory in the system root with insecure permissions by default (granting members of the "Users" group permissions to create files and directories). This can be exploited to execute arbitrary code with the privileges of another user running the application by placing e.g. a malicious library file in the installation directory.
NOTE: This is a general problem for the majority of Windows applications when installed outside the "Program Files" folder due to unsafe default permissions combined with the way libraries are located.
The vulnerabilities are confirmed in versions 18.104.22.168 and 22.214.171.124. Other versions may also be affected.
Solution: Set secure permissions on the installation directory and do not open untrusted files.
Provided and/or discovered by: APA-IUTcert Vulnerability Analysis Team
Additional information provided by Secunia Research.
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