Out-of-bounds write in GraphicsMagick PCD decoder

A heap out-of-bounds write exists in the Photo CD (PCD) decoder of GraphicsMagick. In DecodeImage() (coders/pcd.c), the Huffman delta loop advances its output pointer with q++ after every decoded delta and never checks it against the end of the heap-allocated luma/chroma plane buffers. The pointer is repositioned only when a sync marker introduces a new plane/row; between sync markers the run length is bounded solely by the input. A crafted PCD file that positions the pointer near the end of a plane and then supplies a long run of deltas with no intervening sync therefore walks the pointer past the end of the allocation and writes through it. Processing an untrusted PCD file — for example with gm convert or gm identify, or through any application linked against libGraphicsMagick — can corrupt heap memory beyond the buffers.

security flaw

Heap-based buffer overflow in psd.c for ImageMagick 6.1.0, 6.1.7, and possibly earlier versions allows remote attackers to execute arbitrary code via a .PSD image file with a large number of layers.

In GraphicsMagick, a heap buffer overflow was found when parsing MIFF.

GraphicsMagick 1.3.23 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted SVG file, related to the (1) DrawImage function in magick/render.c, (2) SVGStartElement function in coders/svg.c, and (3) TraceArcPath function in magick/render.c.

Buffer overflow in the MVG and SVG rendering code in GraphicsMagick 1.3.24 allows remote attackers to have unspecified impact via unknown vectors. Note: This vulnerability exists due to an incomplete patch for CVE-2016-2317.

Heap-based buffer overflow in the EscapeParenthesis function in GraphicsMagick before 1.3.25 allows remote attackers to have unspecified impact via unknown vectors.

magick/render.c in GraphicsMagick before 1.3.24 allows remote attackers to cause a denial of service (arithmetic exception and application crash) via a crafted svg file.

The TIFFGetField function in coders/tiff.c in GraphicsMagick 1.3.24 allows remote attackers to cause a denial of service (out-of-bounds heap read) via a file containing an "unterminated" string.

Integer underflow in the parse8BIM function in coders/meta.c in GraphicsMagick 1.3.25 and earlier allows remote attackers to cause a denial of service (application crash) via a crafted 8BIM chunk, which triggers a heap-based buffer overflow.

The ReadSCTImage function in coders/sct.c in GraphicsMagick 1.3.25 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted SCT header.

The ReadPCXImage function in coders/pcx.c in GraphicsMagick 1.3.25 allows remote attackers to have unspecified impact via a crafted image, which triggers a memory allocation failure and a "file truncation error for corrupt file."

The MagickMalloc function in magick/memory.c in GraphicsMagick 1.3.25 allows remote attackers to have unspecified impact via a crafted image, which triggers a memory allocation failure and a "file truncation error for corrupt file."

The MagickRealloc function in memory.c in Graphicsmagick 1.3.25 allows remote attackers to cause a denial of service (crash) via large dimensions in a jpeg image.

GraphicsMagick 1.3.26 has double free vulnerabilities in the ReadOneJNGImage() function in coders/png.c.

The ReadWMFImage function in coders/wmf.c in GraphicsMagick 1.3.26 has a use-after-free issue for data associated with exception reporting.

The ReadMNGImage function in coders/png.c in GraphicsMagick 1.3.26 mishandles large MNG images, leading to an invalid memory read in the SetImageColorCallBack function in magick/image.c.

The ReadSUNImage function in coders/sun.c in GraphicsMagick 1.3.26 has a colormap heap-based buffer over-read.

GraphicsMagick 1.3.26 has a heap-based buffer overflow vulnerability in the function GetStyleTokens in coders/svg.c:314:12.

GraphicsMagick 1.3.26 has a heap-based buffer overflow vulnerability in the function GetStyleTokens in coders/svg.c:311:12.

The Utah RLE reader in GraphicsMagick before 1.3.25 allows remote attackers to cause a denial of service (CPU consumption or large memory allocations) via vectors involving the header information and the file size.