Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c (CVE-2020-36277).
Leptonica before 1.80.0 allows a heap-based buffer over-read in findNextBorderPixel in ccbord.c (CVE-2020-36278).
Leptonica before 1.80.0 allows a heap-based buffer over-read in rasteropGeneralLow, related to adaptmap_reg.c and adaptmap.c (CVE-2020-36279).
Leptonica before 1.80.0 allows a heap-based buffer over-read in pixReadFromTiffStream, related to tiffio.c (CVE-2020-36280).
Leptonica before 1.80.0 allows a heap-based buffer over-read in pixFewColorsOctcubeQuantMixed in colorquant1.c (CVE-2020-36281).