CVE-2018-7456

A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.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.)

A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.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.)

A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.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.)

A NULL Pointer Dereference occurs in the function TIFFPrintDirectory in tif_print.c in LibTIFF 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.). (CVE-2018-7456)

These are all security issues fixed in the libtiff-devel-32bit-4.3.0-1.3 package on the GA media of openSUSE Tumbleweed.

This update for tiff fixes the following issues

Security issues:

• CVE-2025-8851: libtiff: LibTIFF Stack-based buffer overflow (bsc#1248278).
• CVE-2026-4775: signed integer overflow in the putcontig8bitYCbCr44tile function (bsc#1260411).

Non security issue:

• QGIS can't export with GDAL- LERC codec, LERC library not found anywhere in the system (bsc#1257123).

This update for tiff fixes the following issues:

These security issues were fixed:

• CVE-2017-18013: There was a Null-Pointer Dereference in the tif_print.c TIFFPrintDirectory function, as demonstrated by a tiffinfo crash. (bsc#1074317)
• CVE-2018-10963: The TIFFWriteDirectorySec() function in tif_dirwrite.c allowed remote attackers to cause a denial of service (assertion failure and application crash) via a crafted file, a different vulnerability than CVE-2017-13726. (bsc#1092949)
• CVE-2018-7456: Prevent a NULL Pointer dereference in the function TIFFPrintDirectory when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013 (bsc#1082825)
• CVE-2017-11613: Prevent denial of service in the TIFFOpen function. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If the value of td_imagelength is set close to the amount of system memory, it will hang the system or trigger the OOM killer (bsc#1082332)
• CVE-2018-8905: Prevent heap-based buffer overflow in the function LZWDecodeCompat via a crafted TIFF file (bsc#1086408)
• CVE-2016-8331: Prevent remote code execution because of incorrect handling of TIFF images. A crafted TIFF document could have lead to a type confusion vulnerability resulting in remote code execution. This vulnerability could have been be triggered via a TIFF file delivered to the application using LibTIFF's tag extension functionality (bsc#1007276)
• CVE-2016-3632: The _TIFFVGetField function allowed remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted TIFF image (bsc#974621)

This update for tiff fixes the following security issues:

• CVE-2017-5225: Prevent heap buffer overflow in the tools/tiffcp that could have caused DoS or code execution via a crafted BitsPerSample value (bsc#1019611)
• CVE-2018-7456: Prevent a NULL Pointer dereference in the function TIFFPrintDirectory when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013 (bsc#1082825)
• CVE-2017-11613: Prevent denial of service in the TIFFOpen function. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If the value of td_imagelength is set close to the amount of system memory, it will hang the system or trigger the OOM killer (bsc#1082332)
• CVE-2016-10266: Prevent remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted TIFF image, related to libtiff/tif_read.c:351:22 (bsc#1031263)
• CVE-2018-8905: Prevent heap-based buffer overflow in the function LZWDecodeCompat via a crafted TIFF file (bsc#1086408)
• CVE-2016-9540: Prevent out-of-bounds write on tiled images with odd tile width versus image width (bsc#1011839).
• CVE-2016-9535: tif_predict.h and tif_predict.c had assertions that could have lead to assertion failures in debug mode, or buffer overflows in release mode, when dealing with unusual tile size like YCbCr with subsampling (bsc#1011846).
• CVE-2016-9535: tif_predict.h and tif_predict.c had assertions that could have lead to assertion failures in debug mode, or buffer overflows in release mode, when dealing with unusual tile size like YCbCr with subsampling (bsc#1011846).
• Removed assert in readSeparateTilesIntoBuffer() function (bsc#1017689).
• CVE-2016-10095: Prevent stack-based buffer overflow in the _TIFFVGetField function that allowed remote attackers to cause a denial of service (crash) via a crafted TIFF file (bsc#1017690).
• CVE-2016-8331: Prevent remote code execution because of incorrect handling of TIFF images. A crafted TIFF document could have lead to a type confusion vulnerability resulting in remote code execution. This vulnerability could have been be triggered via a TIFF file delivered to the application using LibTIFF's tag extension functionality (bsc#1007276).
• CVE-2016-3632: The _TIFFVGetField function allowed remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted TIFF image (bsc#974621).

This update for tiff fixes the following security issues:

These security issues were fixed:

• CVE-2017-18013: Fixed a NULL pointer dereference in the tif_print.cTIFFPrintDirectory function that could have lead to denial of service (bsc#1074317).
• CVE-2018-10963: Fixed an assertion failure in the TIFFWriteDirectorySec() function in tif_dirwrite.c, which allowed remote attackers to cause a denial of service via a crafted file (bsc#1092949).
• CVE-2018-7456: Prevent a NULL Pointer dereference in the function TIFFPrintDirectory when using the tiffinfo tool to print crafted TIFF information, a different vulnerability than CVE-2017-18013 (bsc#1082825).
• CVE-2017-11613: Prevent denial of service in the TIFFOpen function. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If the value of td_imagelength is set close to the amount of system memory, it will hang the system or trigger the OOM killer (bsc#1082332).
• CVE-2018-8905: Prevent heap-based buffer overflow in the function LZWDecodeCompat via a crafted TIFF file (bsc#1086408).

This update for tiff fixes the following issues

Security issues:

• CVE-2025-8851: libtiff: LibTIFF Stack-based buffer overflow (bsc#1248278).
• CVE-2026-4775: signed integer overflow in the putcontig8bitYCbCr44tile function (bsc#1260411).

Non security issue:

• QGIS can't export with GDAL- LERC codec, LERC library not found anywhere in the system (bsc#1257123).

This update for tiff fixes the following issues

Security issues:

• CVE-2025-8851: libtiff: LibTIFF Stack-based buffer overflow (bsc#1248278).
• CVE-2026-4775: signed integer overflow in the putcontig8bitYCbCr44tile function (bsc#1260411).

Non security issue:

• QGIS can't export with GDAL- LERC codec, LERC library not found anywhere in the system (bsc#1257123).

It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges.