Freaks City

Problem Description When executing MyBatis mapper methods, the folowing exception occurs: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression '_clause.operator.alias'. Cause: org.apache.ibatis.ognl.OgnlException: source is null for getProperty(null, "opera ...

Target Objective The mission is to retrieve two flags: user.txt and root.txt. The latter requires elevated privileges, necessitating privilege escalation after initial access. Setup Attacker: Kali Linux (IP: 192.168.80.129) Target VM: Download from https://download.vulnhub.com/ha/narak.ova Reconnaissance Active Host Discovery Scan the subne ...

Relational Operators in JSTL JSTL provides comparison operators that can be used within EL expressions: -lt — less than -le — less than or equal to -gt — greater than -ge — greater than or equal to -eq — equal to -ne — not equal to Checking for null or empty values: <c:if test="${empty items}"> <!-- Handle empty case -- ...

What Is a Pointer? A pointer represents an address in memory, essentially serving as the identifier for a memory unit. Each byte in memory possesses its own unique address. When you declare a variable, the system allocates a specific block of memory for that variable, and the variable's value is stored within that allocated space. Integer Point ...

Class and Object Relationship Classes define blueprints for creating objects. Objects possess attributes (state) and methods (behavior). Implementing Object-Oriented Concepts Class Definition class Vehicle(): pass Object Instantiation car = Vehicle() print(car) # Memory address Self Parameter class Vehicle(): def start_engine(self): ...

1. What Are I/O Streams? I stands for Input, and O stands for Output. These streams handle reading and writing of data to files or other sources. 2. I/O Classification Classification by Data Processing Format Byte Streams: Handle binary data (images, audio, video, etc.) InputStream: Byte-based input stream OutputStream: Byte-based output stre ...

Linked List Fundamentals A linked list is a linear data structure where elements are not stored in contiguous memory locations. Instead, each component consists of a data field and a reference pointer that chains to the subsequent element. This architecture contrasts sharply with arrays, which rely on fixed, continuous memory blocks. Structural ...

Working with JSON in Java Applications JSON proecssing is a common requirement in Java applications, particularly when dealing with web services or configuration files. The parseObject method provides a straightforward way to convert JSON strings into Java objects. JSON Parsing with FastJSON The FastJSON library offers efficient JSON processing ...

AJ-Report is an open-source Business Intelligence platform. In versions 1.4.0 and earlier, an authentication bypass vulnerability exists. An attacker can exploit this flaw to circumvent access controls and execute arbitrary code on the server. Patch Comparison Method 1 Extract the compiled code from a Docker container and download the official ...

Vulnerability Profile The Crocus platform exposes an authentication-bypass flaw within its Service.do interface. Attackers can manipulate the Path parameter associated with the Download action to access restricted system files. Identification Strategy Network Scanning Public internet scanners can identify susceptible endpoints by searching for ...