jbig2dec: User-assisted execution of arbitrary code

jbig2dec: User-assisted execution of arbitrary code Multiple integer overflow flaws have been discovered in jbig2dec, possibly resulting in execution of arbitrary code or Denial of Service. jbig2dec 2017-08-26 2017-08-26 616464 remote 0.13-r4 0.13-r4

jbig2dec is a decoder implementation of the JBIG2 image compression format.

Integer overflow errors have been discovered in the jbig2_decode_symbol_dict, jbig2_build_huffman_table, and jbig2_image_compose functions of jbig2dec.

A remote attacker, by enticing a user to open a specially crafted JBIG2 file using an application linked against jbig2dec, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

There is no known workaround at this time.

All jbig2dec users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=media-libs/jbig2dec-0.13-r4"

CVE-2017-7885 CVE-2017-7975 CVE-2017-7976 BlueKnight ackle