Heap Out-of-Bounds Read in Foxit PDF Editor

Executive Summary

This is a heap-based out-of-bounds read vulnerability in Foxit PDF Editor Reader. It occurs when the application processes PDF image objects with inconsistent compression metadata. The software fails to validate the metadata properly during image decoding, leading to an undersized buffer. This causes the application to read memory outside the intended buffer while rendering the PDF, which can crash the application.

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Detection Guidance

This vulnerability involves a heap-based out-of-bounds read in Foxit PDF Editor Reader during PDF image object processing. Detection requires inspecting PDF files for inconsistent compression metadata in image objects. Use Foxit's built-in update checks or monitor for crashes during PDF rendering. No specific commands are provided in the context to directly detect this issue.

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Impact Analysis

If exploited, this vulnerability could allow an attacker to crash the Foxit PDF Editor Reader application when you open a specially crafted PDF file. This could lead to denial of service, disrupting your ability to view or edit PDFs. It may also potentially expose limited memory contents, though no direct code execution is indicated.

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Compliance Impact

This vulnerability may impact compliance with GDPR and HIPAA by potentially exposing sensitive data through application crashes caused by out-of-bounds reads. Such crashes could lead to unauthorized access or disclosure of personal or health information during rendering of malformed PDFs.

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Mitigation Strategies

Update Foxit PDF Editor Reader to the latest version to patch the vulnerability. Avoid opening untrusted PDF files, especially those with image objects. Disable PDF rendering in email clients or web browsers if possible.

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