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GLSA
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Joined: 12 May 2004
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PostPosted: Sat Aug 26, 2017 4:26 pm    Post subject: [ GLSA 201708-10 ] jbig2dec Reply with quote

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


References

CVE-2017-7885
CVE-2017-7975
CVE-2017-7976


Last edited by GLSA on Fri Sep 29, 2017 4:17 am; edited 1 time in total
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