Exam 1z0-819 topic 1 question 8 discussion

The correct answer is E. denial of service attack against any reachable machine. The code fragment shows that the enableService method uses the AccessController.doPrivileged method to create a new Socket with the specified hostname and portNumber. The security policy file grants the codebase permission to connect to any host using SocketPermission. This means that an attacker could potentially use this method to repeatedly create connections to any reachable machine, overwhelming its resources and causing a denial of service attack.

Any customer can call customer visible enableService(String hostName, String portNumber) "This means that an attacker could potentially use this method to repeatedly create connections to any reachable machine, overwhelming its resources and causing a denial of service attack"

Denial of service attack against any reachable host: Letting socket connections to be opened to any host has the potential to cause a denial of service attack against that host.

Option A is correct because it pertains to full access being granted to the file.

The security vulnerability exposed to your cloud customer's code in this scenario is E. denial of service attack against any reachable machine. The SocketPermission "*", "connect"; grant in the security policy file allows the mlib.jar to establish a network connection to any host. If a malicious user has the ability to control the hostName and portNumber parameters of the enableService method, they could potentially create numerous connections to a specific host, thereby causing a Denial of Service (DoS) attack. This could make the targeted machine unavailable by flooding it with network requests. Please note that this is a potential risk, and actual exploitation would depend on various factors, including the control a malicious user has over the hostName and portNumber parameters, and the resilience of the targeted system.

Based on the fact that this has more to do with file access permissions I think option A makes sense, though there is potential for a DoS attack due to improper file handling I think A is more suited as the possibly most obvious vulnerability

Right answer is A. B will not because The security vulnerability described in option B, an SQL injection attack against the specified host and port, is not applicable in this scenario.