Debian Long Term Support / LTS Security Information / 2017 / Security Information -- DLA-942-1 jbig2dec

Debian Security Advisory

DLA-942-1 jbig2dec -- LTS security update

Date Reported:

15 May 2017

Affected Packages:

jbig2dec

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2017-7885, CVE-2017-7975, CVE-2017-7976.

More information:

• CVE-2017-7885

  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 jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file.

• CVE-2017-7975

  Artifex jbig2dec 0.13, as used in Ghostscript, allows out-of-bounds writes because of an integer overflow in the jbig2_build_huffman_table function in jbig2_huffman.c during operations on a crafted JBIG2 file, leading to a denial of service (application crash) or possibly execution of arbitrary code.

• CVE-2017-7976

  Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or disclosure of sensitive information from process memory.

For Debian 7 Wheezy, these problems have been fixed in version 0.13-4~deb7u2.

We recommend that you upgrade your jbig2dec packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS