CAPEC-155 - Screen Temporary Files for Sensitive Information

An attacker exploits the temporary, insecure storage of information by monitoring the content of files used to store temp data during an application's routine execution flow. Many applications use temporary files to accelerate processing or to provide records of state across multiple executions of the application. Sometimes, however, these temporary files may end up storing sensitive information. By screening an application's temporary files, an attacker might be able to discover such sensitive information. For example, web browsers often cache content to accelerate subsequent lookups. If the content contains sensitive information then the attacker could recover this from the web cache.

Severity

Likelihood

Confidentiality

Integrity

Availability

The target application must utilize temporary files and must fail to adequately secure them against other parties reading them.

Because some application may have a large number of temporary files and/or these temporary files may be very large, an attacker may need tools that help them quickly search these files for sensitive information. If the attacker can simply copy the files to another location and if the speed of the search is not important, the attacker can still perform the attack without any special resources.