50 lines
1.9 KiB
Plaintext
50 lines
1.9 KiB
Plaintext
|
=== What is the potential impact?
|
||
|
|
|
||
|
|
If user-supplied values are used to choose which code is executed, an attacker
|
||
|
|
may be able to supply carefully-chosen values that cause unexpected code to run.
|
||
|
|
The attacker can use this ability to run arbitrary code on the server.
|
||
|
|
|
||
|
|
Below are some real-world scenarios that illustrate some impacts of an attacker
|
||
|
|
exploiting the vulnerability.
|
||
|
|
|
||
|
|
==== Application-specific attacks
|
||
|
|
|
||
|
|
In this scenario, the attackers succeed in injecting a seemingly-legitimate
|
||
|
|
object, but whose properties might be used maliciously.
|
||
|
|
|
||
|
|
Depending on the application, attackers might be able to modify important data
|
||
|
|
structures or content to escalate privileges or perform unwanted actions.
|
||
|
|
For example, with an e-commerce application, this could be changing the number
|
||
|
|
of products or prices.
|
||
|
|
|
||
|
|
==== Full application compromise
|
||
|
|
|
||
|
|
In the worst-case scenario, the attackers succeed in injecting an object
|
||
|
|
triggering code execution.
|
||
|
|
|
||
|
|
Depending on the attacker, code execution can be used with different
|
||
|
|
intentions:
|
||
|
|
|
||
|
|
* Download the internal server's data, most likely to sell it.
|
||
|
|
* Modify data, install malware, for instance, malware that mines cryptocurrencies.
|
||
|
|
* Stop services or exhaust resources, for instance, with fork bombs.
|
||
|
|
|
||
|
|
This threat is particularly insidious if the attacked organization does not
|
||
|
|
maintain a Disaster Recovery Plan (DRP).
|
||
|
|
|
||
|
|
==== Root privilege escalation and pivot
|
||
|
|
|
||
|
|
In this scenario, the attacker can do everything described in the previous
|
||
|
|
section. The difference is that the attacker additionally manages to elevate
|
||
|
|
their privileges as an administrator and attack other servers.
|
||
|
|
|
||
|
|
Here, the impact depends on how much the target company focuses on its Defense
|
||
|
|
In Depth. For example, the entire infrastructure can be compromised through a
|
||
|
|
combination of unsafe deserialization and misconfiguration:
|
||
|
|
|
||
|
|
* Docker or Kubernetes clusters
|
||
|
|
* cloud services
|
||
|
|
* network firewalls and routing
|
||
|
|
* OS access control
|
||
|
|
|