How BlackBox Pentesters protect web apps from attacks

𝗔𝗿𝗲 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝗮𝗻𝗱 𝗔𝗣𝗜𝘀 𝘀𝗲𝗰𝘂𝗿𝗲? Modern attacks target web apps and APIs more than ever — and one missed vulnerability can open the door to data breaches, reputation damage, and regulatory fines. At BlackBox Pentesters, we go beyond automated scans. Our experts manually test, chain vulnerabilities, and simulate real-world attacker techniques to show you exactly what’s exploitable and how to fix it.  • OWASP Top 10 & business logic flaws  • API endpoint discovery & fuzzing  • Actionable remediation guidance  • Free retesting included Ready to take control of your security? https://lnkd.in/eMa6g7sb or scan the QR code in the carousel.

Command Injection: A Silent Threat to Web Security Command injection is one of the most dangerous vulnerabilities in web applications. It occurs when user input is improperly sanitized and passed directly to the system shell, allowing attackers to execute arbitrary commands. 🧠 Imagine this: A login form or search box accepts input → the application passes it to the backend → the backend blindly trusts it and runs it on the system shell. If the input includes something malicious like ; rm -rf /, the consequences can be catastrophic. 📉 Impact: - Data breaches - System compromise - Service disruption ✅ Mitigation Tips: - Always validate and sanitize user input - Use parameterized queries and safe APIs - Avoid direct shell calls with user data 📊 Diagrammatic Representation: [User Input] → [Web Application] → [System Shell] | ↑ └───────> [Malicious Command] ┘ ` CyberSecurity #WebSecurity #CommandInjection #OWASP #Infosec #SecureCoding #LinkedInTech

🚨 A popular text editor used by millions contains a hidden security risk that could allow attackers to run malicious code on your system. 📌 Here’s a breakdown of the recently discovered Notepad++ DLL Hijacking flaw: • A vulnerability exists where the application insecurely loads its own `langID` DLL file from its current directory. • An attacker can exploit this by placing a malicious DLL file in the same folder as a file the user opens with Notepad++. • If successful, this tricks the application into executing the attacker's code, potentially compromising the entire system. • This flaw is particularly dangerous as it requires no user interaction beyond opening a file, making it a low-effort attack vector. 🛡️ While a fix has been implemented, this serves as a critical reminder to always download software from official sources and keep all applications updated. This isn't just a Notepad++ issue—it highlights a common software supply chain risk. How is your organization strengthening its defenses against these types of dependency and trust chain attacks? Link:https://lnkd.in/ds79a5VG

Cache poisoning vulnerabilities found in 2 DNS resolving apps https://ift.tt/roF2aiW The makers of BIND, the Internet’s most widely used software for resolving domain names, are warning of two vulnerabilities that allow attackers to poison entire caches of results and send users to malicious destinations that are indistinguishable from the real ones. The vulnerabilities, tracked as CVE-2025-40778 and CVE-2025-40780, stem from a logic error and a weakness in generating pseudo-random numbers, respectively. They each carry a severity rating of 8.6. Separately, makers of the Domain Name System resolver software Unbound warned of similar vulnerabilities that were reported by the same researchers. The unbound vulnerability severity score is 5.6 Revisiting Kaminsky’s cache poisoning attack The vulnerabilities can be exploited to cause DNS resolvers located inside thousands of organizations to replace valid results for domain lookups with corrupted ones. The corrupted results would replace the IP addresses controlled by the domain name operator (for instance, 3.15.119.63 for arstechnica.com) with malicious ones controlled by the attacker. Patches for all three vulnerabilities became available on Wednesday. Read full article Comments via Biz & IT – Ars Technica https://arstechnica.com October 22, 2025 at 06:35PM

Gladinet fixes actively exploited zero-day in file-sharing software https://lnkd.in/gnWBtDHW Gladinet has released security updates for its CentreStack business solution to address a local file inclusion vulnerability (CVE-2025-11371) that threat actors have leveraged as a zero-day since late September. The local file inclusion (LFI) vulnerability enabled attackers to read the Web.config file on fully patched CentreStack deployments, extract the machine key, and then use it to exploit CVE-2025-30406. When Huntress alerted of the zero-day attacks Gladinet provided mitigations for customers and was in the process of developing a patch. The security update that addresses CVE-2025-11371 is now available in CentreStack version 16.10.10408.56683 and administrators are strongly recommended to install it.

🚨 Zero-Day Alert: WinRAR Under Active Attack! 🚨 A newly discovered zero-day vulnerability in WinRAR is being actively exploited by threat actors. Here’s what you need to know: 🔓 The flaw allows attackers to execute arbitrary code when a user opens a crafted archive file, giving them control over the system. 🌐 This is achieved by exploiting a flaw in the recovery volume processing, bypassing security measures that typically warn users about suspicious files. 📁 The malicious archives appear with a .rar extension, making them look like legitimate compressed files and increasing the likelihood of a user opening them. 🛠️ A patch is not yet available. The only current mitigation is to avoid opening RAR files from unknown or untrusted sources. This exploit highlights the ongoing risks posed by ubiquitous software tools. How is your organization ensuring employee vigilance against social engineering tactics that deliver such malicious files? Link:https://lnkd.in/dz5T-TKS

𝗔𝗴𝗲𝗻𝘁𝗦𝗲𝗲𝗿 𝗥𝗲𝘃𝗲𝗮𝗹𝘀 𝗡𝗲𝘄 𝗔𝘁𝘁𝗮𝗰𝗸 𝗦𝘂𝗿𝗳𝗮𝗰𝗲𝘀 𝗶𝗻 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀 A new framework called AgentSeer maps how LLM vulnerabilities evolve when models become agents — using tools, APIs, or memory. It found attack paths unique to agentic behavior that don’t exist in model-only settings. ◆ Why it matters: Security assessments must now account for toolchains, not just model prompts.

🚨 New Blog: Local File Inclusion (LFI) Attacks! LFI might sound old-school, but it’s still one of the most dangerous and underrated web vulnerabilities. A single unsanitized parameter can expose sensitive files, leak credentials, or even lead to remote code execution. In this post, I break down how LFI works, common exploitation paths, and practical ways to secure your apps. Read here → https://lnkd.in/gqRqAaaQ #CyberSecurity #AppSec #BugBounty #LFI #EthicalHacking #Infosec #WebSecurity

🔐OpenSSL CVE-2025-9230 Memory Corruption Risk in CMS Decryption A moderate-severity vulnerability has been identified in OpenSSL’s RFC 3211 KEK unwrap functionality. This flaw can lead to out-of-bounds memory reads and writes during CMS message decryption.   What’s at risk: • Application crashes due to denial of service • Potential memory corruption, with rare chances of code execution • Affects OpenSSL versions from 1.0.2 through 3.5.x   Recommended actions: • Upgrade to a patched OpenSSL version immediately • Audit your use of CMS PBE decryption in all applications • Watch for crashes or unusual behavior in decryption processes • Minimize reliance on PBE-based cryptographic operations until patched   Even infrequently used features can become critical attack surfaces. Stay proactive by updating and reviewing your cryptographic stack.   👉 Follow us for easy, actionable cybersecurity insights. 🔗 https://cyberhawks.io/

Your vulnerability scanners can’t find business logic flaws. But attackers can.  Traditional security tools like SAST and DAST are great at surfacing broken code. They flag missing sanitization, missing crypto, unsafe functions... everything you expect in a secure development lifecycle.  But here’s the kicker: they can’t see when your business logic is flawed.  And when attackers find those flaws before you do, the damage can be huge.  🛒 Concurrent Workflow Bypass  By exploiting these flaws, cybercriminals can exploit race conditions and skip required steps - like confirming a shipment before payment.  Suddenly, you’re not selling a product; you’re giving it away.  📉 Action Limit Overrun This kind of abuse allows attackers to abuse broken business logic to perform what was meant to be a limited function an unlimited number of times.  Imagine you’ve released a one-time discount code that an attacker has figured out how to apply endlessly. What impact will that have on your bottom line? 💻 Object State Manipulation  Also known as Mass Assignment, these flaws let attackers change how your system understands their request. Picture a sign-up form asking only for a name and email. If your attacker slips in a hidden field like role=admin, and if the system accepts it, they just leveled up their access. The bottom line? If you’re only scanning for code vulnerabilities, you’re leaving your APIs wide open to abuse. You need to catch business logic abuse in real time. That's why Wallarm built an AI-powered business logic abuse detector that learns normal session behavior and flags skipped steps in business processes. 👉 Ready to see how it works? https://lnkd.in/dzEUn773 #Cybersecurity #APIsecurity #Wallarm #BusinessLogicAbuse