In /MagickCore/statistic.c, there are several areas in ApplyEvaluateOperator() where a size_t cast should have been a ssize_t cast, which causes out-of-range values under some circumstances when a crafted input file is processed by ImageMagick. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to 6.9.10-69.

A flaw was found in ImageMagick in MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned char. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0.

A floating point math calculation in ScaleAnyToQuantum() of /MagickCore/quantum-private.h could lead to undefined behavior in the form of a value outside the range of type unsigned long long. The flaw could be triggered by a crafted input file under certain conditions when it is processed by ImageMagick. Red Hat Product Security marked this as Low because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to 7.0.8-68.

in SetImageExtent() of /MagickCore/image.c, an incorrect image depth size can cause a memory leak because the code which checks for the proper image depth size does not reset the size in the event there is an invalid size. The patch resets the depth to a proper size before throwing an exception. The memory leak can be triggered by a crafted input file that is processed by ImageMagick and could cause an impact to application reliability, such as denial of service. This flaw affects ImageMagick versions prior to 7.0.9-0.

Due to a missing check for 0 value of `replace_extent`, it is possible for offset `p` to overflow in SubstituteString(), causing potential impact to application availability. This could be triggered by a crafted input file that is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.

A flaw was found in ImageMagick in coders/bmp.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type `unsigned int`. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0.

The PALM image coder at coders/palm.c makes an improper call to AcquireQuantumMemory() in routine WritePALMImage() because it needs to be offset by 256. This can cause a out-of-bounds read later on in the routine. The patch adds 256 to bytes_per_row in the call to AcquireQuantumMemory(). This could cause impact to reliability. This flaw affects ImageMagick versions prior to 7.0.8-68.

A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed() or GetPixelBlue() was called. This could occur if an attacker is able to submit a malicious image file to be processed by ImageMagick and could lead to denial of service. It likely would not lead to anything further because the memory is used as pixel data and not e.g. a function pointer. This flaw affects ImageMagick versions prior to 7.0.9-0.

TIFFGetProfiles() in /coders/tiff.c calls strstr() which causes a large out-of-bounds read when it searches for `"dc:format=\"image/dng\"` within `profile` due to improper string handling, when a crafted input file is provided to ImageMagick. The patch uses a StringInfo type instead of a raw C string to remedy this. This could cause an impact to availability of the application. This flaw affects ImageMagick versions prior to 7.0.9-0.

There are 4 places in HistogramCompare() in MagickCore/histogram.c where an integer overflow is possible during simple math calculations. This occurs in the rgb values and `count` value for a color. The patch uses casts to `ssize_t` type for these calculations, instead of `int`. This flaw could impact application reliability in the event that ImageMagick processes a crafted input file. This flaw affects ImageMagick versions prior to 7.0.9-0.

In CatromWeights(), MeshInterpolate(), InterpolatePixelChannel(), InterpolatePixelChannels(), and InterpolatePixelInfo(), which are all functions in /MagickCore/pixel.c, there were multiple unconstrained pixel offset calculations which were being used with the floor() function. These calculations produced undefined behavior in the form of out-of-range and integer overflows, as identified by UndefinedBehaviorSanitizer. These instances of undefined behavior could be triggered by an attacker who is able to supply a crafted input file to be processed by ImageMagick. These issues could impact application availability or potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0.

WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times, attempting to pass invalid colormap data to the event logger. The patch replaces the hardcoded 256 value with a call to MagickMin() to ensure the proper value is used. This could impact application availability when a specially crafted input file is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.

The ReadGIFImage function in coders/gif.c in ImageMagick before 6.7.8-8 allows remote attackers to cause a denial of service (memory corruption and application crash) via a crafted comment in a GIF image.

The XWD image (X Window System window dumping file) parsing component in ImageMagick 7.0.8-41 Q16 allows attackers to cause a denial-of-service (application crash resulting from an out-of-bounds Read) in ReadXWDImage in coders/xwd.c by crafting a corrupted XWD image file, a different vulnerability than CVE-2019-11472.

WriteTIFFImage in coders/tiff.c in ImageMagick 7.0.8-43 Q16 allows attackers to cause a denial-of-service (application crash resulting from a heap-based buffer over-read) via a crafted TIFF image file, related to TIFFRewriteDirectory, TIFFWriteDirectory, TIFFWriteDirectorySec, and TIFFWriteDirectoryTagColormap in tif_dirwrite.c of LibTIFF. NOTE: this occurs because of an incomplete fix for CVE-2019-11597.

magick/cache.c in ImageMagick 6.8.9-9 allows remote attackers to cause a denial of service (crash).

ImageMagick allows remote attackers to cause a denial of service (out-of-bounds access) via a crafted viff file.

The xwd file handler in ImageMagick allows remote attackers to cause a denial of service (segmentation fault and application crash) via a malformed xwd file.

The ReadRLEImage function in coders/rle.c in ImageMagick 6.8.9.9 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted image file.

ImageMagick allows remote attackers to cause a denial of service (file descriptor consumption) via a crafted file.

ImageMagick allows remote attackers to cause a denial of service (application crash) via a crafted viff file.

coders/sun.c in ImageMagick allows remote attackers to cause a denial of service (out-of-bounds access) via a crafted sun file.

Memory leak in coders/rle.c in ImageMagick allows remote attackers to cause a denial of service (memory consumption) via a crafted rle file.

The pdb coder in ImageMagick allows remote attackers to cause a denial of service (double free) via unspecified vectors.

The ReadDIBImage function in coders/dib.c in ImageMagick allows remote attackers to cause a denial of service (crash) via a corrupted dib file.

ImageMagick allows remote attackers to cause a denial of service (segmentation fault and application crash) via a crafted pnm file.

ImageMagick allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted ps file.

ImageMagick allows remote attackers to cause a denial of service (segmentation fault and application crash) via a crafted xwd image.

PCX parser code in ImageMagick before 6.8.9-9 allows remote attackers to cause a denial of service (out-of-bounds read).

The HorizontalFilter function in resize.c in ImageMagick before 6.8.9-9 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted image file.

ImageMagick 7.0.8-34 has a memory leak vulnerability in the WriteDPXImage function in coders/dpx.c.

LocaleLowercase in MagickCore/locale.c in ImageMagick before 7.0.8-32 allows out-of-bounds access, leading to a SIGSEGV.

ImageMagick 7.0.7-2 has a memory leak in ReadSGIImage in coders/sgi.c.

The Magick_png_malloc function in coders/png.c in ImageMagick 6.7.8 and earlier does not use the proper variable type for the allocation size, which might allow remote attackers to cause a denial of service (crash) via a crafted PNG file that triggers incorrect memory allocation.

The TIFFGetEXIFProperties function in coders/tiff.c in ImageMagick before 6.7.6-3 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a crafted EXIF IFD in a TIFF image.

A heap-based buffer over-read in SampleImage() in MagickCore/resize.c in ImageMagick 7.0.6-8 Q16 allows remote attackers to cause a denial of service via a crafted file.

In ImageMagick 7.0.6-6 and GraphicsMagick 1.3.26, a heap-based buffer over-read was found in the function SFWScan in coders/sfw.c, which allows attackers to cause a denial of service via a crafted file.

The WriteOnePNGImage function in coders/png.c in ImageMagick through 6.9.9-0 and 7.x through 7.0.6-1 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.

The ReadSCREENSHOTImage function in coders/screenshot.c in ImageMagick before 7.0.6-1 has memory leaks, causing denial of service.

When ImageMagick 7.0.6-1 processes a crafted file in convert, it can lead to a heap-based buffer over-read in the GetPixelIndex() function, called from the WritePICONImage function in coders/xpm.c.

The ReadTXTImage function in coders/txt.c in ImageMagick through 6.9.9-0 and 7.x through 7.0.6-1 allows remote attackers to cause a denial of service (infinite loop) via a crafted file, because the end-of-file condition is not considered.

The ReadPESImage function in coders\pes.c in ImageMagick 7.0.6-1 has an infinite loop vulnerability that can cause CPU exhaustion via a crafted PES file.

The mng_get_long function in coders/png.c in ImageMagick 7.0.6-0 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted MNG image.

Heap overflow in the WaveletDenoiseImage function in MagickCore/fx.c in ImageMagick before 6.9.6-4 and 7.x before 7.0.3-6 allows remote attackers to cause a denial of service (crash) via a crafted image.

Heap-based buffer overflow in coders/hdr.c in ImageMagick allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted HDR file.

The ReadVIFFImage function in coders/viff.c in ImageMagick allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted VIFF file.

MagickCore/memory.c in ImageMagick allows remote attackers to cause a denial of service (out-of-bounds access) via a crafted PDB file.

The EncodeImage function in coders/pict.c in ImageMagick allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted PICT file.

MagickCore/profile.c in ImageMagick before 7.0.3-2 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted file.

coders/wpg.c in ImageMagick allows remote attackers to cause a denial of service (out-of-bounds write) via a crafted file.