| Name |
Leveraging/Manipulating Configuration File Search Paths |
|
| Likelyhood of attack |
Typical severity |
| High |
Very High |
|
| Summary |
This pattern of attack sees an adversary load a malicious resource into a program's standard path so that when a known command is executed then the system instead executes the malicious component. The adversary can either modify the search path a program uses, like a PATH variable or classpath, or they can manipulate resources on the path to point to their malicious components. J2EE applications and other component based applications that are built from multiple binaries can have very long list of dependencies to execute. If one of these libraries and/or references is controllable by the attacker then application controls can be circumvented by the attacker. |
| Prerequisites |
The attacker must be able to write to redirect search paths on the victim host. |
| Solutions | Design: Enforce principle of least privilege Design: Ensure that the program's compound parts, including all system dependencies, classpath, path, and so on, are secured to the same or higher level assurance as the program Implementation: Host integrity monitoring |
| Related Weaknesses |
|
CWE ID
|
Description
|
| CWE-426 |
Untrusted Search Path |
| CWE-427 |
Uncontrolled Search Path Element |
|
| Related CAPECS |
|
CAPEC ID
|
Description
|
| CAPEC-159 |
An adversary exploits a weakness in the way an application searches for external libraries to manipulate the execution flow to point to an adversary supplied library or code base. This pattern of attack allows the adversary to compromise the application or server via the execution of unauthorized code. An application typically makes calls to functions that are a part of libraries external to the application. These libraries may be part of the operating system or they may be third party libraries. If an adversary can redirect an application's attempts to access these libraries to other libraries that the adversary supplies, the adversary will be able to force the targeted application to execute arbitrary code. This is especially dangerous if the targeted application has enhanced privileges. Access can be redirected through a number of techniques, including the use of symbolic links, search path modification, and relative path manipulation. |
|
| Taxonomy: ATTACK |
|
Entry ID
|
Entry Name
|
| 1574.007 |
Hijack Execution Flow:Path Interception by PATH Environment Variable |
|