Home > CAPEC List > CAPEC-649: Adding a Space to a File Extension (Version 3.0)  

CAPEC-649: Adding a Space to a File Extension

Attack Pattern ID: 649
Abstraction: Detailed
Status: Draft
Presentation Filter:
+ Description
An adversary adds a space character to the end of a file extension and takes advantage of an application that does not properly neutralize trailing special elements in file names. This extra space, which can be difficult for a user to notice, affects which default application is used to operate on the file and can be leveraged by the adversary to control execution.
+ Likelihood Of Attack


+ Typical Severity


+ Relationships

The table(s) below shows the other attack patterns and high level categories that are related to this attack pattern. These relationships are defined as ChildOf, ParentOf, MemberOf and give insight to similar items that may exist at higher and lower levels of abstraction. In addition, relationships such as CanFollow, PeerOf, and CanAlsoBe are defined to show similar attack patterns that the user may want to explore.

+ Relevant to the view "Mechanisms of Attack" (CAPEC-1000)
ChildOfStandard Attack PatternStandard Attack Pattern - A standard level attack pattern in CAPEC is focused on a specific methodology or technique used in an attack. It is often seen as a singular piece of a fully executed attack. A standard attack pattern is meant to provide sufficient details to understand the specific technique and how it attempts to accomplish a desired goal. A standard level attack pattern is a specific type of a more abstract meta level attack pattern.635Alternative Execution Due to Deceptive Filenames
+ Prerequisites
The use of the file must be controlled by the file extension.
+ Consequences

The table below specifies different individual consequences associated with the attack pattern. The Scope identifies the security property that is violated, while the Impact describes the negative technical impact that arises if an adversary succeeds in their attack. The Likelihood provides information about how likely the specific consequence is expected to be seen relative to the other consequences in the list. For example, there may be high likelihood that a pattern will be used to achieve a certain impact, but a low likelihood that it will be exploited to achieve a different impact.

Execute Unauthorized Commands
+ Mitigations
File extensions should be checked to see if non-visible characters are being included.
+ Taxonomy Mappings
Relevant to the ATT&CK taxonomy mapping
Entry IDEntry Name
1151Space after Filename
+ Content History
Submission DateSubmitterOrganization
2018-05-31CAPEC Content TeamThe MITRE Corporation

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Page Last Updated or Reviewed: July 31, 2018