eml_parser library stack overflow vulnerability and fix details

Vulnerability Overview This vulnerability involves multiple security issues within the library, primarily including: 1. Stack Overflow: There is a risk of stack overflow during the parsing of email headers. 2. Inefficient Parenthesis Removal: Processing nested parentheses is inefficient, potentially leading to performance issues. 3. Improper Handling of HTML Entities: There are potential security risks when handling HTML entities within URLs. Affected Scope Affected Versions: and earlier. Affected Modules: The email header parsing, URL processing, and HTML entity handling modules within the library. Remediation 1. Handling Stack Overflow: - In , a limit on recursion depth has been added to prevent stack overflows. - The specific code modifications are as follows: 2. Optimizing Parenthesis Removal: - In , the logic for parenthesis removal has been improved to enhance efficiency. - The specific code modifications are as follows: 3. Proper Handling of HTML Entities: - In , handling for HTML entities within URLs has been added. - The specific code modifications are as follows: POC Code No specific POC code or exploitation code was provided. Summary This vulnerability primarily concerns stack overflow, parenthesis removal efficiency, and HTML entity handling issues within the library. The remediation measures include adding recursion depth limits, optimizing parenthesis removal logic, and properly handling HTML entities. It is recommended that users upgrade to a version later than to resolve these issues.

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eml_parser library stack overflow vulnerability and fix details

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