How to Spot and Exploit Broken Access Control Like a Pro

How Attack Surface Management Helps Prevent Cyber Threats In today's digital landscape, businesses face an ever-expanding attack surface---the sum of all potential entry points that cybercriminals can exploit. Many organizations are unaware that their attack surface is constantly evolving with new digital assets, software updates, and employee access changes. This is where Attack Surface Management (ASM) plays a crucial role in cybersecurity. What Is Attack Surface Management? ---------------------------------- Attack Surface Management (ASM) is a proactive cybersecurity approach that continuously identifies, monitors, and secures an organization's digital assets to prevent cyber threats. ASM focuses on minimizing exposure by identifying potential vulnerabilities before attackers do. Key Aspects of ASM: Discovery: Identifying all digital assets, including cloud services, applications, APIs, and third-party integrations. Risk-Based Vulnerability Management: Prioritizing threats based on risk level rather than generic security flaws. Continuous Monitoring: Keeping track of new assets and configuration changes that might introduce security gaps. Automated Threat Detection: Leveraging AI-driven tools to detect vulnerabilities and misconfigurations in real time. Common Attack Vectors Exploited by Cybercriminals ------------------------------------------------- Cyber attackers are always on the lookout for exposed entry points. Without a structured cyber threat detection strategy, businesses may fall victim to: Unpatched Software: Hackers exploit vulnerabilities in outdated applications and operating systems. Misconfigured Cloud Storage: Poorly secured cloud services can expose sensitive data to unauthorized access. Leaked Credentials: Employee credentials compromised in data breaches can be used for unauthorized access. Shadow IT Assets: Unknown or unmanaged devices and applications increase security risks. Third-Party Vulnerabilities: Suppliers and partners with weak security practices can create an indirect attack pathway. How Attack Surface Management Helps Prevent Cyber Threats --------------------------------------------------------- Implementing Attack Surface Management enhances cybersecurity in several ways: 1\. Continuous Threat Visibility Traditional security assessments provide only a snapshot in time of an organization's vulnerabilities. ASM ensures ongoing security by continuously discovering and assessing all digital assets. 2\. Risk-Based Vulnerability Management Not all vulnerabilities pose the same level of risk. ASM enables organizations to focus on high-impact threats, reducing false positives and prioritizing critical fixes. 3\. Automated Cyber Threat Detection Using advanced algorithms and AI-powered security tools, ASM automates the detection of security weaknesses, allowing businesses to respond before cybercriminals can exploit them. 4\. Improved Compliance and Governance Many industries require businesses to maintain strict security compliance standards (e.g., GDPR, PCI-DSS, HIPAA). ASM ensures that security measures remain up to date and compliant with regulations. 5\. Strengthening Cloud and Remote Work Security With the shift to cloud-based infrastructure and remote work, attack surfaces have grown significantly. ASM provides visibility into cloud configurations, third-party integrations, and endpoint security to reduce risk exposure. Final Thoughts -------------- As cyber threats evolve, businesses need a proactive cybersecurity strategy that adapts to an ever-changing digital landscape. Attack Surface Management (ASM) is a vital tool for ensuring continuous security by identifying and mitigating risks before attackers can exploit them. Need Expert Security Assessment? At Cyberbay, we help businesses strengthen their cybersecurity with Attack Surface Management and cyber threat detection solutions. Contact us today to secure your digital assets and reduce risk exposure. Book a Demo to see how we can help!

How Cybercriminals Exploit Exposed Credentials Stolen credentials are one of the leading causes of data breaches. Cybercriminals use exposed usernames and passwords from data leaks to gain unauthorized access, launch credential stuffing attacks, and compromise sensitive business information. With billions of credentials available on the dark web, businesses must take proactive measures to enhance password security and prevent cyber threats. This blog explores how hackers obtain credentials, what they do with them, and how you can stay protected. How Hackers Get Credentials --------------------------- Cybercriminals use multiple tactics to steal and collect login credentials. The most common methods include: 1\. Phishing Attacks Attackers trick users into revealing their usernames and passwords through fake emails, websites, or messages. Phishing pages mimic legitimate login portals to steal credentials. 2\. Malware & Keyloggers Malicious software infects devices to capture keystrokes and steal login details. Spyware and trojans silently collect credentials and send them to attackers. 3\. Data Breaches & Leaked Databases Large-scale cyberattacks expose millions of usernames and passwords, often sold on dark web forums. Many users reuse passwords, making leaked credentials valuable for multiple attacks. 4\. Brute Force Attacks Automated bots guess weak passwords using common words, patterns, and dictionary attacks. Short or simple passwords make brute force attacks easier. What Happens Next? How Hackers Exploit Stolen Credentials --------------------------------------------------------- Once attackers gain access to credentials, they use them in various malicious ways. 1\. Credential Stuffing Attacks Hackers use automated tools to test stolen usernames and passwords across multiple websites. If users reuse passwords, attackers gain access to bank accounts, emails, and business platforms. 2\. Account Takeovers (ATO) Stolen credentials allow cybercriminals to hijack accounts, change login details, and lock out users. ATO attacks often lead to financial fraud, identity theft, and data leaks. 3\. Business Email Compromise (BEC) Attackers access corporate email accounts and impersonate employees to launch fraud schemes. Cybercriminals trick companies into wire transfers, invoice fraud, and phishing campaigns. How to Stay Safe: Password Security Best Practices -------------------------------------------------- Protecting your business from credential-related attacks requires proactive security measures. Here's how to stay safe: 1\. Use Strong & Unique Passwords Create long, complex passwords with a mix of uppercase, lowercase, numbers, and symbols. Avoid using personal information, common words, or easily guessed phrases. 2\. Enable Multi-Factor Authentication (MFA) MFA adds an extra layer of security, requiring additional verification beyond a password. Even if hackers steal credentials, they can't access accounts without the second factor. 3\. Monitor the Dark Web for Exposed Credentials Dark web monitoring tools detect if your business credentials appear in leaked databases. Proactive monitoring helps businesses take action before cybercriminals exploit credentials. 4\. Use a Password Manager Password managers generate and store unique passwords for each account, preventing reuse. They automatically fill in credentials, reducing phishing risks from fake login pages. 5\. Educate Employees on Cyber Hygiene Conduct security awareness training to help employees recognize phishing attempts. Encourage employees to report suspicious login activities and change compromised passwords immediately. Final Thoughts -------------- Cybercriminals continue to exploit dark web credential leaks to launch attacks on businesses and individuals. Implementing password security best practices, using MFA, and monitoring for stolen credentials are essential steps to protecting sensitive accounts. Need Advanced Credential Security? At Cyberbay, we offer dark web monitoring, MFA implementation, and cyber resilience strategies to protect your organization from credential-based attacks. Book a Demo today and secure your business!

How to Spot and Exploit Broken Access Control Like a Pro Broken Access Control is one of the most dangerous vulnerabilities out there—if exploited, it can grant attackers unauthorized access to sensitive data, admin functionalities, or even full system control. Want to sharpen your skills and uncover critical access control flaws? This guide breaks down how to identify, test, and report Broken Access Control vulnerabilities effectively. --- 🔍 What is Broken Access Control? Broken Access Control happens when an application fails to enforce proper permissions, allowing users to perform actions or access data they shouldn't. This could mean: Regular users accessing admin-only features Unauthorized API requests revealing sensitive data Attackers modifying roles or privileges The key to finding these flaws? Think like an attacker. If you can manipulate parameters, bypass authentication, or force unauthorized actions, you've likely got a serious security issue. --- 🛠️ Tools & Knowledge You Need Before diving into testing, make sure you have: ✅ Essential Tools Burp Suite – Intercept and modify web traffic Postman or cURL – Send API requests Ffuf/Dirb/Gobuster – Fuzz hidden endpoints ✅ Key Knowledge Areas How authentication works (tokens, cookies, headers) Understanding role-based access control (RBAC) How APIs manage user permissions ✅ Access Requirements Test credentials for different roles (e.g., user vs. admin) The ability to interact with the app both authenticated & unauthenticated --- 🚀 Testing Techniques 🔎 1. Enumerate Endpoints First, map out all possible API and web endpoints. Use Burp Suite, ffuf, or web spiders to discover accessible routes. Look for patterns that indicate privileged actions or sensitive data. Example endpoints that might indicate access control risks: *** / api / getUserDetails / api / deleteUser / api / admin / settings *** 👉 Red Flag: If regular users can see or access admin-related endpoints, it's time to dig deeper. --- 🔐 2. Test for Authentication Bypass Check if you can access restricted endpoints without logging in. Steps: 1️⃣ Send a normal request to a protected endpoint. 2️⃣ Remove the Authorization header or session cookie. 3️⃣ Observe the response. 4️⃣ If the action still succeeds, the app is not enforcing authentication properly. 🚨 Example Exploit: If /api/deleteUser works even without authentication, it's a major flaw. --- ⚡ 3. Check for Privilege Escalation Can a low-privileged user perform admin-level actions? Steps: 1️⃣ Log in as a regular user (e.g., "User"). 2️⃣ Try accessing admin-only pages (e.g., /admin/settings). 3️⃣ If you can view, modify, or delete admin data, access control is broken. 🚨 Example Exploit: Changing: *** { "role": "user" } *** to: *** { "role": "admin" } *** in a request could escalate privileges if proper checks aren’t enforced. --- 🆔 4. Look for IDOR (Insecure Direct Object References) IDOR flaws allow attackers to access or modify someone else's data by changing an identifier in a request. Steps: 1️⃣ Send a request that contains a user ID or other identifier. 2️⃣ Modify the value to another user's ID. 3️⃣ If you get someone else’s data, it's an IDOR vulnerability. 🚨 Example Exploit: Request: *** / getUserDetails ? id=123 *** Modify to: *** / getUserDetails ? id=124 *** If you get another user's details, the app lacks proper access controls. --- 🛠️ 5. Fuzzing for Access Control Flaws Fuzzing helps uncover hidden flaws in endpoints or parameters. Steps: 1️⃣ Use Burp Suite Intruder or ffuf to send automated variations of requests. 2️⃣ Modify: Tokens (try expired, fake, or modified JWTs) User IDs (check for IDOR) Roles or privileges (can a regular user act as admin?) 3️⃣ Look for unexpected responses that indicate improper validation. --- 🔥 Real-World Signs of Broken Access Control ❌ Viewing sensitive data you shouldn’t have access to ❌ Performing actions (e.g., deleting records) as a low-privileged user ❌ Accessing admin pages without proper authorization --- 🏆 Advanced Exploitation Techniques 📂 Force Browsing Try manually accessing sensitive files or endpoints (e.g., /admin, /confidential/report.pdf). 🔄 Session Replay Reuse another user's JWT, session ID, or token to check if the app validates session security. 🔑 JWT & Token Manipulation If the app uses JWTs, modify the payload to escalate privileges. --- 🎯 Want to Practice? Try these free labs to sharpen your access control hacking skills: 🔹 PortSwigger Web Security Academy 🔹 OWASP Juice Shop 👉 These platforms provide hands-on challenges to help you find and exploit real access control issues. --- 🔥 Final Thoughts Broken Access Control is one of the most critical security flaws—and one of the easiest to exploit when developers overlook proper checks. By mastering these testing techniques, you'll be able to: ✅ Identify serious access control issues ✅ Help secure applications against unauthorized access ✅ Report vulnerabilities that make a real impact So, what are you waiting for? Start testing, start hacking, and level up your skills today! 🚀

Mastering Security Report Writing: Pro Tips to Get Your Findings Accepted A weak security report can mean the difference between your findings being ignored or acted upon. If you want your vulnerability disclosures to be taken seriously, you need to present them clearly, concisely, and professionally. Ready to level up your security reports? Follow these expert tips to make your reports stand out, get accepted, and drive real security improvements. --- 1️⃣ Follow Cyberbay Reporting Guidelines Before submitting a report, review Cyberbay’s official reporting guidelines: 🔗 Cyberbay Reporting Guidelines https://drive.google.com/file/d/1HtiWKQERbwIPVFj-y7kWV1_v24m4-BO9/view --- 2️⃣ Provide a Descriptive & Specific Title A concise, clear title helps triagers quickly understand the issue. ✅ Good Example: IDOR in /api/profile Allows Unauthorized User Data Access ❌ Bad Example: "Critical vulnerability in website!!!" 🔹 Title Format (Target) + (Bug Type/Technology/Endpoint) --- 3️⃣ Describe the Vulnerability Clearly Explain the issue in simple, technical terms. Mention the affected endpoint, parameter, or function. Avoid vague descriptions—be specific and to the point. --- 4️⃣ Steps to Reproduce (With Minimal Guesswork) Use a numbered format to make reproduction easy: Log in as a regular user. Intercept the request to /api/profile?id=123. Change the ID to another user's ID (e.g., 124). Observe that unauthorized data is returned. --- 5️⃣ Include Request & Response Samples Providing raw request/response data helps validate the issue quickly. 🔹 Affected Request: GET /api/profile?id=123 HTTP/1.1 Host: example.com *Authorization: Bearer * 🔹 Response Data: { "id": 123, "name": "John Doe", "email": "john@example.com" } --- 6️⃣ Explain the Security Impact Describe what an attacker could do if this vulnerability were exploited. List possible consequences, such as: Data leakage Account takeover Privilege escalation --- 7️⃣ Provide a Clear Proof of Concept (PoC) Focus on the sensitive impact (e.g., credentials, mass user data exposure). Avoid including irrelevant details (e.g., system health info). Include screenshots or video evidence to strengthen your case. 🔹 Example PoC Format Request & response evidence Browser developer tools / Burp Suite screenshots --- 8️⃣ Suggested Remediation Help the security team fix the issue by recommending solutions: ✅ Implement proper access controls. ✅ Validate user permissions on the server side. ✅ Use secure session handling mechanisms. --- 9️⃣ Maintain Professional Language Keep the report clear, respectful, and concise. Avoid opinions, assumptions, or informal language. ✅ Good Example: "The lack of proper authorization allows an attacker to view other users' sensitive data." ❌ Bad Example: "Your site has a huge security hole that anyone can exploit!" --- 🔟 Attach Additional Evidence (If Needed) JSON responses, logs, screenshots, or Burp Suite traffic. Only include relevant information—avoid unnecessary clutter. --- 📌 Sample Report Summary: The application is vulnerable to SQL Injection due to WAF bypass via origin server IP access. This allows an attacker to execute malicious SQL queries against the database. Impact: An attacker can: ✅ Access sensitive database records. ✅ Modify or delete critical information. ✅ Potentially compromise the entire system. --- Steps to Reproduce: Navigate to https:// and use Burp Suite’s match & replace feature. Modify the "Host" header to match Host: * (See *POC1.png). Access https:/// and observe that the WAF is bypassed (See POC2.png). Run the following SQL injection payloads (POC3.png, POC4.png, and POC5.png): python sqlmap.py --proxy="http://:8080" -u "https:///.aspx?=2" --batch --dbs* python sqlmap.py --proxy="http://:8080" -u "https:///.aspx?=2" --batch -D --tables* python sqlmap.py --proxy="http://:8080" -u "https:///.aspx?=2" --batch -D -T --dump --start 1 --stop 2* --- Recommendations: ✅ Remediate All Endpoints & APIs: Ensure WAF protection is enforced on all interfaces, including origin servers. ✅ Block Direct IP Access: Restrict traffic to only pass through the WAF or load balancer. ✅ Sanitize User Input: Implement strict input validation and parameterized queries. ✅ Use Network Segmentation: Isolate the database to prevent direct access. ✅ Conduct Regular Penetration Testing: Identify bypass techniques before attackers do. --- 🔥 Final Thoughts A well-structured report is your best chance at getting vulnerabilities accepted quickly. Follow this framework to maximize your success and help secure systems effectively. 🚀

PoC Release for Critical Pre-Authentication Remote Code Execution (RCE) Cyberbay is releasing a Proof of Concept (PoC) for a critical pre-authentication Remote Code Execution (RCE) vulnerability identified during a security assessment. This blog outlines the vulnerability at a high level, its potential impact, and key takeaways for organizations and security teams. This disclosure follows responsible security practices and is intended to help defenders understand risk, validate exposure, and prioritize remediation. Vulnerability Overview The identified issue allows an unauthenticated attacker to execute arbitrary code on the affected system without prior authentication. Pre-authentication RCE vulnerabilities are among the most severe classes of security flaws due to their low attack complexity and high impact. Affected Component Public-facing application endpoint No authentication or session context required Exploitable via crafted network requests Why Pre-Authentication RCE Is Critical Pre-auth RCE vulnerabilities significantly increase organizational risk because: No valid credentials are required The attack surface is exposed to the internet Exploitation can often be automated Attackers can gain full system control If left unpatched, this class of vulnerability can lead to infrastructure compromise, data breaches, service disruption, and lateral movement within internal networks. Proof of Concept (PoC) Summary The PoC demonstrates that an attacker can trigger code execution by sending a specifically crafted request to the vulnerable endpoint. PoC Scope Confirms exploitability Demonstrates impact without destructive payloads Avoids disclosure of sensitive exploit chains The PoC is designed for verification and defensive testing only. It does not include weaponized payloads or automation intended for misuse. Security Impact Successful exploitation may allow an attacker to: Execute arbitrary system commands Access sensitive configuration or credential data Establish persistent access Pivot to internal systems Given the pre-auth nature of the issue, exploitation could occur at scale if the vulnerability is publicly exposed. Recommended Mitigations Organizations are strongly advised to take the following actions: Immediate Actions Patch or upgrade affected components immediately Restrict public access to vulnerable endpoints Apply network-level access controls where possible Defense-in-Depth Measures Enforce strict input validation Implement proper authentication checks server-side Deploy WAF rules as a temporary mitigation Monitor logs for abnormal pre-auth request patterns Responsible Disclosure & Cyberbay’s Role Cyberbay follows a responsible disclosure process and works closely with security teams to ensure vulnerabilities are reported, validated, and addressed effectively. This PoC release is intended to: Help organizations assess exposure Encourage timely remediation Promote secure development and deployment practices Final Notes Pre-authentication RCE vulnerabilities represent a critical risk and should be treated with the highest priority. Organizations are encouraged to review their external attack surface regularly and conduct continuous security testing. Cyberbay remains committed to enabling responsible security research and improving real-world security outcomes through transparent, professional disclosure. Need Expert Security Assessment? At Cyberbay, we help businesses strengthen their cybersecurity with Attack Surface Management and cyber threat detection solutions. Contact us today to secure your digital assets and reduce risk exposure. Book a Demo to see how we can help!