fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. In versions 4.1.3 through 5.3.5, the XML parser can be forced to do an unlimited amount of entity expansion. With a very small XML input, it’s possible to make the parser spend seconds or even minutes processing a single request, effectively freezing the application. Version 5.3.6 fixes the issue. As a workaround, avoid using DOCTYPE parsing by processEntities: false option.
Weakness
The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Fast-xml-parser | Naturalintelligence | 4.1.3 (including) | 5.3.6 (excluding) |
| Red Hat Advanced Cluster Security for Kubernetes 4.8 | RedHat | advanced-cluster-security/rhacs-main-rhel8:1775594119 | * |
| Red Hat Advanced Cluster Security for Kubernetes 4.9 | RedHat | advanced-cluster-security/rhacs-main-rhel8:1775594284 | * |
| Red Hat Developer Hub 1.8 | RedHat | rhdh/rhdh-hub-rhel9:1774545605 | * |
| Red Hat Developer Hub 1.9 | RedHat | rhdh/rhdh-hub-rhel9:1775140647 | * |