9.3
CVSSv2

CVE-2009-4117

Published: 01/12/2009 Updated: 11/03/2020
CVSS v2 Base Score: 9.3 | Impact Score: 10 | Exploitability Score: 8.6
VMScore: 935
Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Summary

Multiple stack-based buffer overflows in pdf_shade4.c in MuPDF before commit 20091125231942, as used in SumatraPDF prior to 1.0.1, allow remote malicious users to cause a denial of service and possibly execute arbitrary code via a /Decode array for certain types of shading that are not properly handled by the (1) pdf_loadtype4shade, (2) pdf_loadtype5shade, (3) pdf_loadtype6shade, and (4) pdf_loadtype7shade functions. NOTE: some of these details are obtained from third party information.

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Exploits

"MuPDF is a lightweight PDF viewer and toolkit written in portable C" It is used in particular by SumatraPDF which is a small open-source PDF viewer for Windows MuPDF before commit 20091125231942 did not properly handle /Decode arrays in a shading of type 4 to 7, leading to a stack-based buffer overflow Version 101 of SumatraPDF integrates th ...