[ GLSA 201708-10 ] jbig2dec

[GLSA]

Gentoo Linux Security Advisory

Title: jbig2dec: User-assisted execution of arbitrary code (GLSA 201708-10)
Severity: normal
Exploitable: remote
Date: 2017-08-26
Bug(s): #616464
ID: 201708-10

Synopsis

Multiple integer overflow flaws have been discovered in jbig2dec,
possibly resulting in execution of arbitrary code or Denial of Service.


Background

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


Affected Packages

Package: media-libs/jbig2dec
Vulnerable: < 0.13-r4
Unaffected: >= 0.13-r4
Architectures: All supported architectures


Description

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


Impact

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.


Workaround

There is no known workaround at this time.

Resolution

All jbig2dec users should upgrade to the latest version: