Consider a blog publishing tool, which might have three explicit control spheres: the creation of articles, only accessible to a "publisher;" commenting on articles, only accessible to a "commenter" who is a registered user; and reading articles, only accessible to an anonymous reader. Suppose that the application is deployed on a web server that is shared with untrusted parties. If a local user c…
In Untrusted Search Path (CWE-426), a user might be able to define the PATH environment variable to cause the product to search in the wrong directory for a library to load. The product's intended sphere of control would include "resources that are only modifiable by the person who installed the product." The PATH effectively changes the definition of this sphere so that it overlaps the attacker's…