Posted by Ron E on Sep 30
A heap buffer overflow vulnerability exists in the geotifcp utility,
distributed as part of libgeotiff. The flaw occurs in the function
cpContig2ContigByRow_8_to_4 when processing TIFF images with an odd
ImageWidth and using the -d option (downsampling from 8-bit to 4-bit).
During conversion, the function iterates over pixels in pairs and always
accesses buf_in[i_in+1]. When the width is odd, the last iteration
dereferences one byte past the…
– Read More – Full Disclosure
