Modernize and secure temp file creation #13
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Sensitive Information Disclosure
DescriptionSensitive Information Disclosure (also known as Sensitive Data Exposure) happens when an application does not adequately protect sensitive information that may wind up being disclosed to parties that are not supposed to have access to it. Sensitive data can include application-related information, such as session tokens, file names, stack traces, or confidential information, such as passwords, credit card data, sensitive health data, private communications, intellectual property, metadata, the product's source code, etc. Whichever security flaw is causing the information to be disclosed, all aspects of all kinds of services are potentially at risk. Sensitive Information Disclosure can arise in databases, operating systems, and network devices. It is particularly occurrent in web applications, as highlighted in OWASP's Top 10, which lists Sensitive Information Disclosure as part of the Insecure Design web application security risk of which to be aware. Necessary privacy and security protection legislation and regulations are created and reworked to try to ensure that organizations holding sensitive data meet their obligations to safeguard such data. The European General Data Protection Regulation (GDPR) is one such law; the Payment Card Industry Data Security Standard (PCI DSS) is an example of regulation. Read moreImpactThe scale of impact from a Sensitive Information Disclosure event is limited only by the type of sensitive information disclosed and a malicious actor's ability to leverage it. For example, the fallout could be as minor as a local pathname being disclosed in a stack trace, allowing a malicious actor to improve their knowledge of the target's implementation details, right through to a full-blown data leak involving millions of customers' confidential data. ScenariosOne typical example is to permit an end user to receive the default error pages of the application server. This can expose the location on the file system of the file that caused the issue along with the precise version of the server itself, and the third-party components. Attackers can use this knowledge in a variety of ways, for example, to target well-known exploits in one particular version of a component. A more severe scenario involves a web page rendering an error message from a SQL server for a failed query. If some parameter is in control of the attacker, a malicious actor could exploit this exposure to exfiltrate arbitrary data from the database by sending specially crafted queries. There are countless technologies sat under the IT umbrella susceptible to this comprehensive vulnerability class; basically, anything not properly tied down containing even minimal information may become the prey of a determined malicious actor. PreventionSensitive Information Disclosure is a symptom of poor security-control implementation in web applications. Preventing it requires developers to adhere to numerous, necessary industry best-practices in line with current regulations to increase the difficulty for the attacker.
TestingEnsure that data's confidentiality is protected from unauthorized observation or disclosure.
ReferencesOWASP - Top 10:2021 Insecure Design CWE - CWE-200: Exposure of Sensitive Information to an Unauthorized Actor |
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Micro-Learning Topic: Information disclosure (Detected by phrase)Matched on "information leakage"Many web applications and APIs do not properly protect sensitive data, such as financial, healthcare, and PII. Attackers may steal or modify such weakly protected data to conduct credit card fraud, identity theft, or other crimes. Sensitive data may be compromised without extra protection, such as encryption at rest or in transit, and requires special precautions when exchanged with the browser. Source: https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project Try a challenge in Secure Code Warrior |
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The files' contents are under analysis for test generation. |
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Review changes with SemanticDiff. Analyzed 1 of 1 files.
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Reviewer's Guide by SourceryThis pull request modernizes and secures temporary file creation by replacing the usage of Class diagram for updated temporary file creationclassDiagram
class Utility {
+String downloadFile(String urlString)
}
class File {
+static File createTempFile(String prefix, String suffix)
}
class Files {
+static Path createTempFile(String prefix, String suffix, FileAttribute<?>... attrs)
}
Utility --> File : replaced with
Utility --> Files : uses
Files --> File : converts to
File-Level Changes
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FeedbackGreat improvement on modernizing and securing temp file creation by replacing The diff in +import java.nio.file.Files;
...
- var file = File.createTempFile("promise_pattern", null);
+ var file = Files.createTempFile("promise_pattern", null).toFile(); |
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PR Details of @pixeebot[bot] in java-design-patterns :
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Description has been updated! |
Micro-Learning Topic: Exposure of Sensitive Information to an Unauthorized Actor (CWE 200)Matched on "CWE-200"The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Try a challenge in Secure Code WarriorHelpful references
Micro-Learning Topic: Sensitive information exposure (Detected by phrase)Matched on "Sensitive Data Exposure"Displaying too much information without proper access-control can lead to sensitive data being revealed that could be of value to an attacker directly or useful in a subsequent attack. Try a challenge in Secure Code WarriorHelpful references
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Please double check the following review of the pull request:Issues counts
Changes in the diff
Identified Issues
Issue 1: Best PracticesDetails: The temporary file created using Proposed Code Fix: public static String downloadFile(String urlString) throws IOException {
LOGGER.info("Downloading contents from url: {}", urlString);
var url = new URL(urlString);
var file = Files.createTempFile("promise_pattern", null).toFile();
try (var bufferedReader = new BufferedReader(new InputStreamReader(url.openStream()));
var writer = new FileWriter(file)) {
String line;
while ((line = bufferedReader.readLine()) != null) {
writer.write(line);
writer.write(System.lineSeparator());
}
} finally {
if (file.exists()) {
file.delete();
}
}
return file.getAbsolutePath();
}Explanation: The fix involves adding a Missing TestsTo ensure the changes work correctly, consider adding the following tests:
Summon me to re-review when updated! Yours, Gooroo.dev |
Potential issues, bugs, and flaws that can introduce unwanted behavior:
Code suggestions and improvements for better exception handling, logic, standardization, and consistency:
By addressing these points, the quality and robustness of the |
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🎉🥳 Looks like issue resolved, feel free to reopen, if not. |
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🎉🥳 Looks like issue resolved, feel free to reopen, if not. |
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| import java.io.IOException; | ||
| import java.io.InputStreamReader; | ||
| import java.net.URL; | ||
| import java.nio.file.Files; | ||
| import java.util.Collections; | ||
| import java.util.Comparator; | ||
| import java.util.Map; |
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The Utility class imports and uses a wide range of functionalities (I/O, networking, and collections). This could lead to violations of the Single Responsibility Principle (SRP). Consider refactoring this class into more focused classes that handle specific types of operations to improve modularity and maintainability.
| public static String downloadFile(String urlString) throws IOException { | ||
| LOGGER.info("Downloading contents from url: {}", urlString); | ||
| var url = new URL(urlString); | ||
| var file = File.createTempFile("promise_pattern", null); | ||
| var file = Files.createTempFile("promise_pattern", null).toFile(); | ||
| try (var bufferedReader = new BufferedReader(new InputStreamReader(url.openStream())); | ||
| var writer = new FileWriter(file)) { | ||
| String line; |
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The downloadFile method lacks validation for the urlString parameter. This could expose the application to security risks such as SSRF (Server-Side Request Forgery). It is recommended to implement input validation for URLs to ensure they are within expected and safe boundaries before processing them.
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Micro-Learning Topic: Server-side request forgery (Detected by phrase)
Matched on "Server-Side Request Forgery"
Server-Side Request Forgery (SSRF) vulnerabilities are caused when an attacker can supply or modify a URL that reads or sends data to the server. The attacker can create a malicious request with a manipulated URL, when this request reaches the server, the server-side code executes the exploit URL causing the attacker to be able to read data from services that shouldn't be exposed.
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Issues Summary1. Project not found in SonarQubeLogs Summary: Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.9.1.2184:sonar (default-cli) on project java-design-patterns: Project not found. Please check the 'sonar.projectKey' and 'sonar.organization' properties, the 'SONAR_TOKEN' environment variable, or contact the project administrator to check the permissions of the user the token belongs to -> [Help 1]Failing Step: org.sonarsource.scanner.maven:sonar-maven-plugin:3.9.1.2184:sonar (default-cli) Related Source Files: java-design-patterns Related Failures: ℹ️ Help(You can turn this bot off by adding a comment/ai off, or force a refresh of this report with /ai ...)
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Description
In this pull request, the changes made in the
Utility.javafile focus on improving file handling operations by incorporating thejava.nio.file.Filespackage for handling file creation and manipulation.Here are the specific changes in the code diff:
Import the
Filesclass fromjava.nio.filepackage:Modify the creation of temporary file object by converting the result of
Files.createTempFileto aFileobject:Summary by Sourcery
Modernize and secure temporary file creation by replacing java.io.File#createTempFile with java.nio.file.Files#createTempFile to prevent vulnerabilities associated with predictable file names and locations.
Enhancements: