Searching for Code in J2EE/Java

OWASP Code Review Guide Table of Contents

Input and Output Streams

These are used to read data into one’s application. They may be potential entry points into an application. The entry points may be from an external source and must be investigated. These may also be used in path traversal attacks or DoS attacks.

Java.io
java.util.zip
java.util.jar
FileInputStream
ObjectInputStream
FilterInputStream
PipedInputStream
SequenceInputStream
StringBufferInputStream
BufferedReader
ByteArrayInputStream
CharArrayReader
File
ObjectInputStream
PipedInputStream
StreamTokenizer
getResourceAsStream
java.io.FileReader
java.io.FileWriter
java.io.RandomAccessFile
java.io.File
java.io.FileOutputStream
mkdir
renameTo

Servlets

These API calls may be avenues for parameter, header, URL, and cookie tampering, HTTP Response Splitting and information leakage. They should be examined closely as many of such APIs obtain the parameters directly from HTTP requests.

javax.servlet.* 

getParameterNames
getParameterValues
getParameter
getParameterMap
getScheme
getProtocol
getContentType
getServerName
getRemoteAddr
getRemoteHost
getRealPath
getLocalName
getAttribute
getAttributeNames
getLocalAddr
getAuthType
getRemoteUser
getCookies
isSecure
HttpServletRequest
getQueryString
getHeaderNames
getHeaders
getPrincipal
getUserPrincipal
isUserInRole
getInputStream
getOutputStream
getWriter
addCookie
addHeader
setHeader
setAttribute
putValue
javax.servlet.http.Cookie
getName
getPath
getDomain
getComment
getMethod
getPath
getReader
getRealPath
getRequestURI
getRequestURL
getServerName
getValue
getValueNames
getRequestedSessionId

Cross Site Scripting

javax.servlet.ServletOutputStream.print
javax.servlet.jsp.JspWriter.print
java.io.PrintWriter.print

Response Splitting

javax.servlet.http.HttpServletResponse.sendRedirect
addHeader, setHeader

Redirection

sendRedirect
setStatus
addHeader, setHeader