Web applications are one of the most common targets for hacking because they provide easy access to a wider audience, allowing malicious code to spread faster. But, alas, many companies seriously think about how to secure the company from web application vulnerabilities only after the incident has already occurred.
Let’s face it; this oversight has a price – for example, a data breach in 2024 is expected to cost the world $9.5 trillion. However, many of these incidents could have been prevented with the proactive and defensive approach to web security.
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Contact usWe want to save your money and your nerves. Therefore, we at Relevant have prepared an article about the most common vulnerabilities in web applications and best practices for protecting your web apps from malicious attacks and accidental damage in 2024.
Table of Contents
Web apps can be attacked for various reasons, including system flaws resulting from incorrect coding, misconfigured web servers, application design flaws, or failure to validate forms. Any web application has at least one vulnerability that hackers can exploit at a higher level.
Such web application vulnerabilities allow criminals to gain direct and public access to databases that contain valuable information (e.g., financial details or personal data), making them a frequent target of attacks.
Cloud containers that package application software with the elements needed to run it have recently been found particularly vulnerable when they are not properly secured or contain insecure elements. The use of open source and reliance on application programming interfaces (APIs) also exacerbate security concerns.
Predictable resource location, SQL, and code injections were the top three security breaches, making up 64% of all attacks on web apps and APIs. While the number of DDoS attacks on web apps reduced by 33% in 2023 compared to 2022, the frequency of hostile web app transactions increased exponentially, surging by 500%. Attackers are now focusing more on online apps and their infrastructure, with DDoS attacks moving towards more complex attacks aimed at web applications.
Distribution of critical web application vulnerabilities worldwide as of 2022
Cybercriminals use compromised sites for various purposes: to spread malware, steal sensitive data, implant unauthorized information, commit fraud, and infiltrate a company’s internal infrastructure. All this threatens the organization’s operation and reputation. Therefore, securing software and eliminating all potential vulnerabilities in a web application is more than just a choice; it’s imperative in 2024.
That’s why further we highlight how to find vulnerabilities in web applications and what to do to mitigate the risks.
The Open Web Application Security Project (OWASP), an open-source community, aims to make the web the safest for users by creating an overview of the most prevalent web application vulnerabilities and providing industry best practices to mitigate them.
OWASP Top 10 is not just a web application vulnerabilities list. It rates each class of weaknesses using the OWASP Risk Rating methodology and provides examples, attack prevention recommendations, and links for each risk. By examining the Top 10 web application vulnerabilities of OWASP, application developers can take concrete steps to create a more secure application that will help keep users safe when it comes to malicious attacks.
OWASP web security list serves as a lighthouse and is updated every few years based on data from security audits and surveys of experts within the industry. On the diagram, you can see the changes in this list from 2017 to 2021.
So let’s consider the latest web applications vulnerabilities and ways to prevent them in 2024.
At the top of the web application vulnerabilities list is Broken Access Control. Picture a burglar managing to disguise himself and fool the guard dog, or worse, a trusted visitor secretly pocketing the keys. In the digital world, these scenarios might take the form of spoofing or reusing a JSON Web Token (JWT) access control token. It could also involve modifying cookies or hidden fields to elevate privileges or make use of JWT revocation.
But there’s more. Let’s say you’ve got a members-only club, but due to an oversight, the doors are open to anyone and everyone. This is akin to violating the default rejection principle in the digital realm. Administrators should ideally grant access only to those individuals or roles that carry the right passcodes or, better yet, the right capabilities. But alas, a loophole means the doors are wide open, providing a free pass for anyone who stumbles upon it. As you can imagine, such errors can make it a walk in the park for attackers to gain access to their targeted content.
In essence, while access control is our digital guardian, it’s crucial to ensure that it’s foolproof to keep out those with malicious intentions. Our security is only as strong as our weakest link, after all.
The implications of broken access control are chilling: compromised sensitive data, users granted permissions way beyond their purview, or even outright account takeover attacks, where outsiders seize control and orchestrate fraudulent transactions.
Each of these measures you take, each precaution you implement, strengthens your digital fortress, keeping intruders at bay.
Previously known under the banner of sensitive data exposure, these web application vulnerabilities have climbed the ranks to occupy the number two spot. Here, we’re not focusing on the symptoms but rather the root cause – those little hiccups in cryptography, or even their complete absence, that can inadvertently lay bare sensitive data.
At the core of these failures can lie a spectrum of issues:
We’re talking about passwords, email addresses, patient health records, proprietary business secrets, credit card information, and more. Picture this: an application diligently encrypts credit card information using automatic database encryption. All good so far, right? But when this information is accessed, it’s instantly decrypted. This security vulnerability in web applications paves the way for an SQL injection failure to extract the credit card information in plaintext – a field day for any attacker lying in wait.
An injection flaw is one of the security vulnerabilities in web applications that allow a cyberattacker to slip in malicious code through an application all the way to another system. These injections come in various shapes and sizes, including SQL injections, command injections, CRLF injections, LDAP injections—you name it.
They have a broad impact, compromising backend systems and any other clients tethered to the vulnerable app. It’s like a poisonous vine, spreading its dangerous tendrils far and wide. In fact, code injection (14%) and SQL injection (11%) alone account for a whopping quarter of all web application attacks.
Injection attacks are a crafty way for cyber invaders to sneak into off-limits areas and hunt sensitive data, all while pretending to be trusted users. The likely targets? The Input Fields and URLs that communicate with the database.
This category, newly introduced to the OWASP Top 10 vulnerability list, hones in on design and architectural flaws that pave the way for increased security threats. Imagine the painstaking effort put into the perfect implementation of security controls and risk mitigation, only to have it all undermined by foundational design flaws. Even the most expertly crafted security measures can’t hold up if the underlying structure is flawed. Surely, savvy attackers will sniff out and exploit these web application vulnerabilities sooner or later.
In a digital world that’s becoming increasingly complex, authentication failures are relatively common security vulnerabilities in web applications. If your web app’s user identification, authentication, or session management functions are not accurately implemented or adequately secured, it could open up a can of worms.
The very essence of these web application vulnerabilities lies in the delicate balance of granting access to legitimate users while barring entry to unauthorized entities. Any misstep in maintaining this balance, like relying on weak authentication methods, mishandling session tokens, or neglecting security measures for password recovery processes, can serve as an invitation to malicious actors.
Authentication vulnerabilities in a web application can include brute force attacks, where hackers attempt numerous password combinations until they hit the jackpot. Or it could be inadequately hashed and salted passwords that are much easier to crack. Data leaks involving user account details, poorly set timeouts leading to sessions left open longer than necessary, or even something as seemingly harmless as weak passwords such as ‘password1’ or ‘admin1234’ are all web application vulnerabilities ripe for exploitation.
It’s one of the most common vulnerabilities in web applications. You wouldn’t eat food without knowing its source, would you? The same principle applies to web applications that leverage modules, extensions, or repositories from Content Delivery Networks or unverified sources. Without thoroughly checking these sources’ integrity, you’re opening the door wide for malicious code, unauthorized access, and potential compromise.
Today, most software delivery pipelines include an auto-update functionality. This handy feature helps keep your software fresh, downloading and applying updates seamlessly, often without the need for explicit permissions. However, while this is undoubtedly convenient, it’s also a golden opportunity for cyber attackers.
They can, for example, execute a Man-in-the-Middle attack to inject harmful code into the pipeline during an update process. Suddenly, what should have been a routine update becomes a Trojan horse, delivering corrupted payloads right into your application installations.
Without the right tools to track your web application vulnerabilities, you’re essentially navigating blind. Hence, logging and monitoring provide essential accountability, give you a clear view of what’s happening, trigger incident alerts, and serve as a vital aid for forensic investigations. If these systems fail, it’s similar to turning off the ship’s radar – your ability to detect and react to breaches is severely compromised.
Without sufficient monitoring, logging, or reporting, your web application becomes an open target. Attackers can exploit web vulnerabilities in any part of the application stack, with potential impacts ranging from minor disruptions to devastating breaches.
It’s a deceptive cyber exploit that tricks a web application into sending a fake request to an unintended location. What’s particularly disastrous about this attack is that it can even penetrate secure bastions guarded by VPNs, firewalls, or network access control lists. This ability to sneak past defenses makes SSRF a major threat among common web application vulnerabilities.
What amplifies the danger of SSRF is that an attacker can perform an internal reconnaissance attack and collect internal information about a target network secretly. They exploit the trust placed in the web app by internal systems and search for any sensitive areas and web application vulnerabilities that can be easily exploited.
During an SSRF attack, a cyber intruder can manipulate a server, forcing it to access internal services within an organization’s digital fortress. In more complex scenarios, these malicious actors could maneuver the server to link to external systems, risking the leakage of sensitive info such as login credentials.
It happens when your safety protocols aren’t set up correctly or contain mistakes. These not-so-obvious bugs tear open security gaps, leaving your app, its valuable data, and, yes, your entire organization exposed to the dangerous world of cyberattacks or hacking. These web application vulnerabilities are easy targets for cybercriminals.
Everything from unpatched weak spots, unused pages, unguarded files or directories, dated software, and even running software in a state where it’s laying all its cards on the table – debug mode. Discovering a misconfiguration should set off alarm bells. It becomes essential to sprint towards a security audit, examining any signs of attacks or breaches.
Start with ensuring you follow secure construction principles. This involves:
Most online applications are built using third-party frameworks. So, your app may contain unknown codes that can lead you down a rabbit hole of unexpected events, such as accent control violations, unauthorized access, SQL injections, and other threats.
If the software is insecure, outdated, or unsupported, you unknowingly open doors to web application security vulnerabilities. Imagine your app as a complex ecosystem consisting of various elements – the application or web server, the operating system, applications, database management systems (DBMS), APIs, other elements, libraries, and runtimes. When any part of this ecosystem becomes compromised, it can lead to a cascade of troubles.
Based on our expertise in software development, we strongly recommend the following preventative measures:
While the OWASP Top 10 vulnerability list provides a robust framework for improving web application security, it shouldn’t be-all and end-all. Yes, it heavily emphasizes server-side security, but many of today’s attacks target the client side. In other words, it’s vital to maintain a 360-degree security vision. Consider the Top 10 vulnerabilities by OWASP as a starting point and complement it with strategies tailored to your needs.
Although application software development and frameworks are becoming increasingly secure, attackers find new ways to attack their weak points. Deployment isn’t the end of the road – security experts must always be on their toes, finding and fixing all possible web applications’ vulnerabilities. The efficacy of these fixies depends on their awareness of cyber threats and the application of strong security practices.
If you lack sufficient resources to defend your web application against cyber attacks, you can outsource it to managed security service providers like Relevant. Our experience in cybersecurity – from architecture and design to delivery and operations, has enabled us to protect apps, infrastructure, and processes for clients from various industries, including fintech, SaaS, and IoT. Contact us if you are searching for a reliable security partner to empower your digital world.
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