In Xpdf 4.01.01, a stack-based buffer under-read could be triggered in IdentityFunction::transform in Function.cc, used by GfxAxialShading::getColor. It can, for example, be triggered by sending a crafted PDF document to the pdftoppm tool. It allows an attacker to use a crafted PDF file to cause Denial of Service or possibly unspecified other impact.
The product reads data past the end, or before the beginning, of the intended buffer.
Link | Tags |
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https://forum.xpdfreader.com/viewtopic.php?f=3&t=41872 | third party advisory exploit |