In LibTIFF 4.0.9, a heap-based buffer overflow occurs in the function LZWDecodeCompat in tiflzw.c via a crafted TIFF file, as demonstrated by tiff2ps.
A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tifprint.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0beta7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013. (This affects an earlier part of the TIFFPrintDirectory function that was not addressed by the CVE-2017-18013 patch.)
In LibTIFF 4.0.9, there is an uncontrolled resource consumption in the TIFFSetDirectory function of tifdir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This occurs because the declared number of directory entries is not validated against the actual number of directory entries.
In LibTIFF 4.0.9, there is a NULL pointer dereference in the TIFFWriteDirectorySec function in tifdirwrite.c that will lead to a denial of service attack, as demonstrated by tiffset.
An issue was discovered in LibTIFF 4.0.9. There is a NULL pointer dereference in the function LZWDecode in the file tiflzw.c.
Last updated 25 August 2025
An issue was discovered in LibTIFF 4.0.9. There is a int32 overflow in multiplyms in tools/ppm2tiff.c, which can cause a denial of service (crash) or possibly have unspecified other impact via a crafted image file.
An issue was discovered in LibTIFF 4.0.9. There are two out-of-bounds writes in cpTags in tools/tiff2bw.c and tools/pal2rgb.c, which can cause a denial of service (application crash) or possibly have unspecified other impact via a crafted image file.
A NULL pointer dereference in the function TIFFmemcmp at tifunix.c (called from TIFFWriteDirectoryTagTransferfunction) in LibTIFF 4.0.9 allows an attacker to cause a denial-of-service through a crafted tiff file. This vulnerability can be triggered by the executable tiffcp.
Heap-based buffer overflow in the cpSeparateBufToContigBuf function in tiffcp.c in LibTIFF 3.9.3, 3.9.4, 3.9.5, 3.9.6, 3.9.7, 4.0.0beta7, 4.0.0alpha4, 4.0.0alpha5, 4.0.0alpha6, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.4beta, 4.0.5, 4.0.6, 4.0.7, 4.0.8 and 4.0.9 allows remote attackers to cause a denial of service (crash) or possibly have unspecified other impact via a crafted TIFF file.
A flaw was found in LibTIFF through 4.0.9. TIFFWriteDirectorySec() function in tifdirwrite.c allows remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file.
References: http://bugzilla.maptools.org/showbug.cgi?id=2795
Patch: https://gitlab.com/libtiff/libtiff/commit/de144fd228e4be8aa484c3caf3d814b6fa88c6d9
In LibTIFF 4.0.9, there is a Null-Pointer Dereference in the tifprint.c TIFFPrintDirectory function, as demonstrated by a tiffinfo crash.
Last updated 25 August 2025