An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7663
Reference (s):
- https://gitlab.com/libtiff/libtiff/commit/802d3cbf3043be5dce5317e140ccb1c17a6a2d39
- DEBIAN:DSA-4670
- URL: https://www.debian.org/security/2020/dsa-4670
- GENTOO:GLSA-202003-25
- URL: https://security.gentoo.org/glsa/202003-25