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Vulnerability DatabaseCVE-2021-26259
CVE-2021-26259:
NixOS vulnerability analysis and mitigation
Overview
A heap buffer overflow vulnerability was discovered in HTMLDOC version 1.9.12. The vulnerability exists in the rendertablerow() function within the ps-pdf.cxx file (GitHub Issue, NVD).
Technical details
The vulnerability is classified as a heap buffer overflow (CWE-787) with a CVSS v3.1 base score of 7.8 (HIGH). The issue occurs specifically in the rendertablerow() function within ps-pdf.cxx when processing table attributes. The vulnerability can be triggered when processing malformed HTML tables with bogus attributes (NVD).
Impact
If successfully exploited, this vulnerability could lead to arbitrary code execution and denial of service conditions. The heap buffer overflow could allow attackers to manipulate program execution through memory corruption (NVD).
Mitigation and workarounds
The vulnerability was fixed in a subsequent patch that implements proper validation of table attributes. The fix includes bounds checking for table width, cellpadding, cellspacing, and border values (GitHub Commit).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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