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Vulnerability DatabaseCVE-2020-19467

CVE-2020-19467: 
Homebrew vulnerability analysis and mitigation

Overview

An issue was discovered in PDF2JSON version 0.70 affecting the DCTStream::transformDataUnit function. The vulnerability was reported on May 28, 2019, and is tracked as CVE-2020-19467. The flaw allows attackers to cause a Denial of Service condition through an illegal Use-After-Free vulnerability (GitHub Issue).

Technical details

The vulnerability exists in the DCTStream::transformDataUnit function of PDF2JSON 0.70. The issue manifests as an invalid read of size 2 and size 1 in the affected function, leading to access of freed memory. The bug is triggered through the processing chain: DCTStream::transformDataUnit -> DCTStream::readMCURow -> DCTStream::lookChar, eventually resulting in a segmentation fault. The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (NVD).

Impact

When exploited, this vulnerability can lead to a Denial of Service condition, causing the application to crash. The impact is limited to availability, with no direct impact on confidentiality or integrity of the system (NVD).

Additional resources

Source: This report was generated using AI

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