denial-of-service
Safeguard articles tagged "denial-of-service" — guides, analysis, and best practices for software supply chain and application security.
69 articles
CVE-2022-42004: The jackson-databind DoS Explained
CVE-2022-42004 is a denial-of-service flaw in jackson-databind where deeply nested arrays exhaust resources during deserialization. Here is who is affected and how to fix it.
CVE-2023-34462: The Netty SniHandler Memory Exhaustion Flaw
CVE-2023-34462 lets a crafted TLS ClientHello force Netty's SniHandler to allocate up to 16MB per connection, opening a denial-of-service path. Here is the root cause, affected versions, and the fix.
CVE-2022-2309: The lxml NULL Pointer Dereference DoS Explained
CVE-2022-2309 crashes lxml applications through a NULL pointer dereference in iterwalk. Here is the affected version matrix and how to remediate it.
CVE-2023-1370: How a json-smart Recursion Bug Crashes Java Apps
CVE-2023-1370 lets an attacker crash any Java service that parses untrusted JSON with json-smart, using deeply nested arrays to exhaust the stack. Here is the fix.
CVE-2022-3509: The protobuf-java DoS Vulnerability Explained
CVE-2022-3509 is a denial-of-service flaw in protobuf-java's text-format parser that lets crafted input trigger long garbage-collection pauses. Here is who is affected and how to fix it.
CVE-2022-45688: The Hutool JSON Stack Overflow, Explained
CVE-2022-45688 is a stack-overflow denial-of-service bug in the XML-to-JSON conversion path of hutool-json and org.json. Here is what triggers it and how to fix it.
CVE-2023-29469: A libxml2 Hashing Flaw That Crashes XML Parsers
CVE-2023-29469 lets a crafted XML document trigger a double free in libxml2 through non-deterministic hashing of empty strings. Affected versions and fixes explained.
Tornado Python Security: Hardening Your Async Web App
A security-focused guide to the Tornado Python web framework, covering the cookie-parsing DoS, secure cookie configuration, and safe deployment patterns.
Is body-parser Safe to Use? A Security Review of the npm Package
npm body-parser is Express middleware for reading request bodies, and it is safe when kept current. Here is the CVE-2024-45590 denial-of-service issue and how to configure it defensively.
CVE-2023-22081: The Oracle Java JSSE Denial-of-Service Flaw
CVE-2023-22081 is a Java SE and GraalVM vulnerability in the JSSE component that can cause a partial denial of service over HTTPS. Here is what to patch.
CVE-2022-40152: Woodstox XML Parsing Denial of Service
CVE-2022-40152 lets malicious XML with deeply nested DTD content crash Woodstox-based parsers via stack overflow. Here is the root cause, affected versions, and how to remediate it.
papaparse npm: Security Review and Best Practices
PapaParse is the go-to CSV parser for JavaScript, but older versions carry a ReDoS flaw. Here is a security review and how to use it safely on untrusted files.
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