CVE-2020-19475
Homebrew vulnerability analysis and mitigation

Overview

An issue has been found in function CCITTFaxStream::lookChar in PDF2JSON 0.70 that allows attackers to cause a Denial of Service due to an invalid write of size 2. The vulnerability was discovered and reported in 2020 (NVD).

Technical details

The vulnerability exists in the CCITTFaxStream::lookChar function where there is an invalid write operation of size 2. The issue has been assigned a CVSS v3.1 Base Score of 5.5 MEDIUM (Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H). The vulnerability is classified as an Out-of-bounds Write (CWE-787) (NVD, GitHub Issue).

Impact

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

Exploitability

The vulnerability requires local access and user interaction to be exploited. A proof of concept exploit has been published demonstrating the invalid write condition (GitHub Issue).

Additional resources


SourceThis report was generated using AI

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