Application Security
CWE-435 Improper Interaction Between Correct Components
Two components can each behave correctly and still fail together. CWE-435 explains emergent bugs and how to test the seams between systems.
Oct 18, 20262 min read
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CWE-434 Unrestricted File Upload: How It Happens and How to Fix It
Let users upload files without limits and one of them may be a web shell. CWE-434 explained, with vulnerable and fixed PHP examples.
Oct 18, 20264 min read
Application Security
CWE-433 Unparsed Raw Web Content Delivery Explained
Code and config files under the web root with an unhandled extension get served as plain text, credentials included. CWE-433 and how to prevent it.
Oct 18, 20263 min read
Application Security
CWE-432 Dangerous Signal Handler Not Disabled
Signal handlers that share state can interrupt each other and corrupt it. CWE-432 explains why handlers must block other signals while they run.
Oct 18, 20262 min read
Application Security
CWE-431 Missing Handler: Unhandled Failures and Crashes
When no handler exists for an event or exception, the program loses its chance to decide what a failure means. CWE-431 and how to cover it.
Oct 18, 20262 min read
Application Security
CWE-430 Deployment of Wrong Handler: Causes and Fixes
When the wrong component processes a file or request, source code can leak and checks can be skipped. CWE-430 explained.
Oct 18, 20262 min read
Application Security
CWE-43 Multiple Trailing Dot Path Equivalence
Stack several dots on the end of a path and some servers return a directory listing. A practical look at CWE-43 and its fixes.
Oct 18, 20263 min read
Application Security
CWE-428 Unquoted Search Path: The Program Files Trap
An unquoted path with spaces can make Windows run C:\Program.exe instead of your program. CWE-428 explained, with the one line fix.
Oct 18, 20262 min read
Application Security
CWE-427 Uncontrolled Search Path Element: How to Avoid It
A search path that includes a directory attackers can write to, such as the current directory, lets them plant code your program will load. CWE-427 explained.
Oct 18, 20264 min read
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