GLSA 201708-10: jbig2dec: User-assisted execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	jbig2dec: User-assisted execution of arbitrary code
Date:	08/26/2017
Bugs:	#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	Vulnerable	Unaffected	Architecture(s)
media-libs/jbig2dec	< 0.13-r4	>= 0.13-r4	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:

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

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201708-10.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.