What is the OWASP Top 10?

What is the OWASP Top 10?
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What is the OWASP?

The Open Web Application Security Project (OWASP) is a non-profit organization dedicated to providing unbiased, practical information about application security. 

What is the OWASP Top 10?

The OWASP Top 10 Web Application Security Risks is a report that highlights the most common security issues found in web applications. It provides guidance to developers and security professionals on 10 different common application and system defects which are generally easy to exploit, allowing attackers to install malware, steal data or sometimes even take control of computers. The report was last updated in 2017.

What security risks?

The list below contains the issues included in the latest version of the OWASP Top 10 report:

Vulnerability
Description
Injection
Injection flaws, such as SQL injection, LDAP injection, and CRLF injection, occur when an attacker sends untrusted data to an interpreter that is executed as a command without proper authorization.
Broken Authentication and Session Management
Incorrectly configured user and session authentication could allow attackers to compromise passwords, keys, or session tokens, or take control of users’ accounts to assume their identities.
Sensitive Data Exposure
Applications and APIs that don’t properly protect sensitive data such as financial data, usernames and passwords, or health information, could enable attackers to access such information to commit fraud or steal identities.
XML External Entity
Poorly configured XML processors evaluate external entity references within XML documents. Attackers can use external entities for attacks including remote code execution, and to disclose internal files and SMB file shares.
Broken Access Control
Improperly configured or missing restrictions on authenticated users allow them to access unauthorized functionality or data, such as accessing other users’ accounts, viewing sensitive documents, and modifying data and access rights.
Security Misconfiguration
This risk refers to improper implementation of controls intended to keep application data safe, such as misconfiguration of security headers, error messages containing sensitive information (information leakage), and not patching or upgrading systems, frameworks, and components.
Cross-Site Scripting
Cross-site scripting (XSS) flaws give attackers the capability to inject client-side scripts into the application, for example, to redirect users to malicious websites.
Insecure deserialization
Insecure deserialization flaws can enable an attacker to execute code in the application remotely, tamper or delete serialized (written to disk) objects, conduct injection attacks, and elevate privileges.
Using Components With Known Vulnerabilities
Developers frequently don’t know which open source and third-party components are in their applications, making it difficult to update components when new vulnerabilities are discovered. Attackers can exploit an insecure component to take over the server or steal sensitive data.
Insufficient Logging and Monitoring
The time to detect a breach is frequently measured in weeks or months. Insufficient logging and ineffective integration with security incident response systems allow attackers to pivot to other systems and maintain persistent threats.

For a more technical and in-depth look at the OWASP Top 10, see the official report .

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