Vulnerability in fltk

[ Description ]Official description

FLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dimensions so row decoding writes file-derived data past the heap buffer, corrupting the application heap.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/fltk/fltk
• github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx
• github.com/fltk/fltk/commit/3a049d8262dc759cf9737339420e8457e24c0cb1
• github.com/fltk/fltk/issues/1632
• hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow
• www.vulncheck.com/advisories/fltk-through-1.4.5-heap-buffer-overflow-via-fl-bmp-image-i…