Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2imagecompose function in jbig2image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or disclosure of sensitive information from process memory.

Artifex jbig2dec 0.13, as used in Ghostscript, allows out-of-bounds writes because of an integer overflow in the jbig2buildhuffmantable function in jbig2huffman.c during operations on a crafted JBIG2 file, leading to a denial of service (application crash) or possibly execution of arbitrary code.

Artifex jbig2dec 0.13 has a heap-based buffer over-read leading to denial of service (application crash) or disclosure of sensitive information from process memory, because of an integer overflow in the jbig2decodesymboldict function in jbig2symboldict.c in libjbig2dec.a during operation on a crafted .jb2 file.