Cloud Vulnerability DB
An open project to list all known cloud vulnerabilities and Cloud Service Provider security issues
Vulnerability DatabaseCVE-2023-51105
CVE-2023-51105:
NixOS vulnerability analysis and mitigation
Overview
A floating point exception (divide-by-zero) vulnerability was discovered in Artifex MuPDF 1.23.4 in function bmpdecompressrle4() of load-bmp.c. The vulnerability was assigned CVE-2023-51105 and received a CVSS v3.1 base score of 7.5 (HIGH) (NVD).
Technical details
The vulnerability exists in the bmpdecompressrle4() function within the load-bmp.c file of MuPDF 1.23.4. The issue was identified through clang's scan-build-17 analysis tool. While bmpreadimage() had checks to verify image dimensions are greater than 0 and less than or equal to SHRT_MAX, the static analyzer couldn't determine these checks applied to the compression methods (Ghostscript Commit).
Impact
The vulnerability could allow remote attackers to cause a denial of service through a floating point exception (divide-by-zero) when processing specially crafted BMP files (NVD).
Mitigation and workarounds
The issue has been fixed in commit cee86dc519d5270a3b96476ad15809ceace64a26 by adding redundant assert() statements for image dimensions at the beginning of bmpreadbitmap() to ensure they apply to all compression methods (Ghostscript Bug).
Additional resources
Source: This report was generated using AI
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