Multiple integer overflow flaws have been discovered in jbig2dec, possibly resulting in execution of arbitrary code or Denial of Service.
|Package||media-libs/jbig2dec on all architectures|
|Affected versions||< 0.13-r4|
|Unaffected versions||>= 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"
August 26, 2017
August 26, 2017: 1