HTTP: File Extension in Directory Name

This signature detects HTTP requests that contain a well-known internet file extension being used as a directory. Attackers can use these HTTP requests to hide malicious content in a benign file format. For example, an attacker can disguise a link to a directory containing a malicious HTML file as a link to an image file.

Extended Description

An HTTP request that contains a directory name string consisting of a file extension may be used to trick a user as to what a link is referencing.

References

URL: http://www.juniper.net/security/auto/vulnerabilities/vuln345.html

Short Name

HTTP:EXT:FILE-EXT-IN-DIR

Severity

Minor

Recommended

False

Recommended Action

None

HTTP: File Extension in Directory Name

Extended Description

References

Found a potential security threat?