Directory traversal vulnerability in IBM Informix Dynamic Server (IDS) before 10.00.xC7W1 allows local users to gain privileges by referencing modified NLS message files through directory traversal sequences in the DBLANG environment variable.
IBM Informix Dynamic Server 10.00, Informix Client Software Development Kit (CSDK) 2.90, and Informix I-Connect 2.90 use insecure permissions for installation scripts, which allows local users to gain privileges by modifying the scripts.
The installation script in IBM Informix Dynamic Server 10.00, Informix Client Software Development Kit (CSDK) 2.90, and Informix I-Connect 2.90 allows local users to "compromise security" via a symlink attack on temporary files.